10 Questions You Should to Know about wholesale rubber o rings

In this section, we’ll look a little more closely at what o-rings do, and some of the applications that they’re very often used for.

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O-rings for high-temperature sealing

High-temperature sealing o-rings are, as the name implies, designed to withstand extreme heat while continuing to provide a reliable seal between two surfaces or components.

This makes them ideal for demanding industries and environments such as oil and gas refineries, chemical processing, or any other scenario where a high-temperature seal is required, such as performance transport applications like turbo engines and aerospace engineering.

Best O-ring seal materials for high temperatures

There are a number of popular high-temperature o-ring material choices, including nitrile, hydrogenated nitrile, silicone rubber, polyacrylate and more. Securing the best choice in any given scenario will generally be a balancing act between the specific operating temperature needed, and the most economical material option at that performance point.

For more detail on all types of O-ring materials and designated temperature ranges, feel free to contact our expert support team any time - they’ll be glad to offer further advice and assistance on specific high-temperature seals, materials and applications.

O-ring seal temperature ranges

Again, all industrial o-ring purchases should be carefully planned with direct reference to the specific role and environment the seal is required to perform in. However, as a rough guide to o-ring temperature rating and use limits, some of the more popular materials on sale generally operate within the following sorts of temperature ranges:

• Nitrile: anywhere from -50 C to 120 C
• Hydrogenated nitrile: anywhere from -45 C to 150 C
• Polyacrylate: anywhere from -25 C to 175 C
• Ethylene-propylene: anywhere from -50 C to 135 C
• Chloroprene: anywhere from -40 C to 120 C
• Butyl (petroleum compound): anywhere from -55 C to 205 C
• Fluorosilicone: anywhere from -60 C to 205 C
• Fluorocarbon: anywhere from -25 C to 205 C

O-rings for high-pressure sealing

High-pressure resistance is a common requirement of industrial o-rings, along with reliable performance in high temperature and dynamic environments. For a high-pressure seal to work to optimal levels, o-ring design and manufacture again depends on choosing specific materials for better performance under specific conditions.

O-rings function on the principle that even pressure placed on the (more or less incompressible) o-ring material creates predictable deformation patterns around the perimeter of the gasket in its groove. This means there’s a fairly uniform mechanical stress placed on all contacting surfaces of an o-ring.

Provided the internal pressure from fluids being contained stays below a given O-ring's contact stress rating, it’s largely impossible for leaks to occur, even under high pressure. However, mechanical failure under high pressure can easily cause extrusion or destruction of the o-ring, which is why it’s important to choose the right material for the precise environment you’re looking to use it in.

O-ring seals for engines

An engine o-ring, especially one used in high performance or turbo engines, is a good example of a product that has to be rugged enough in design and material construction to handle various challenging requirements of temperature, pressure and chemical compatibility.

Many basic rubbers and polymers aren’t suitable for use with oils, fuels or solvent-based compounds. For use in an engine, an oil o-ring has to be created specifically from compatible hybrid materials that allow it to maintain crucial o-ring properties (flexibility, incompressibility) while offering more robust resistance to heat, pressure, o-ring leaking and chemical attack than a standard elastomer typically could.

For more advice and information on suitable products to use as engine o-rings, feel free to contact our customer service team through the support pages on our site.

O-ring seals for plumbers

Plumbing o-ring choices are widespread, given the range of materials, sizes and gauges available for use in ducting and pipework applications, as well as to form tight waterproof seals around taps and other fittings. Choosing the best product for the job depends on finding the correct size and shape for the specific role you have in mind.

Food Grade O-ring seals

Food-grade o-rings have been manufactured to more exacting standards of material composition, such that they’ve been officially declared ‘food safe’ for use in the production and preparation of meals, beverages and dining products.

Best food grade O-ring seal materials

An approved food-grade o-ring must only consist of the material(s) declared and approved as food safety compliant in the country of manufacture/sale. In the UK, this applies to natural and synthetic rubbers, elastomers and polymers.

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Are you interested in learning more about flat rubber gaskets? Contact us today to secure an expert consultation!

To achieve food grade approval, an o-ring manufacturer must also take into account extractable ingredients/compounds if the seal is to be used in direct contact with aqueous, acidic or fatty foods and drinks. Some common food-safe o-ring materials include EPDM, fluorocarbon, nitrile, neoprene and silicone.

O-ring seals for CO2

Carbon dioxide often presents an issue for many types of o-rings, as softer materials have a tendency to absorb the gas over time and swell up. This can lead to an unreliable seal in the short term, and over time the CO2 will actually cause the o-ring to start to break down from within.

Some popular choices for use in applications where the o-ring will have extended CO2 contact include polyurethane, PTFE, nitrile, and fluoroelastomers. However, the best choice will always depend on the consideration of other environmental or application factors.

O-ring seals for aircrafts

Aircraft o-rings and aerospace o-rings generally need to be highly chemically resistant, and able to operate within a wide range of temperatures and pressures in order to keep an aerospace craft’s powertrain running cleanly, efficiently and smoothly. Typical applications include fuel cap gaskets, fuel system o-rings, and valve cover seals.

Common elastomers for use in aerospace-type applications include nitriles, ethylene-propylene, fluorosilicones and more. Because there are so many different sizes and gauges of o-ring distributed throughout most aircraft engines and systems, most sales for aerospace and aeronautics are through bulk orders of multi-size o-ring kits.

What is a Silicone Ring?

A silicone ring is a type of ring that is made from silicone, a rubber-like material. Silicone is hypoallergenic, whereas many people are allergic to rubber (e.g. latex).

So when you look for rubber wedding bands, what you want is actually a silicone ring.

Why should I wear a Silicone ring?

There are several reasons why you should wear silicone rings over traditional metal rings:

Safety: Silicone rings are safe to wear in situations where traditional metal rings may be dangerous, such as when working with machinery or in construction. Silicone rings will break off under tension (such as ring snag), keeping your fingers safe.

Comfort: Silicone rings are comfortable to wear because they are flexible and lightweight, and won't cause any irritation or allergic reactions.

A great training wedding ring (especially for newlyweds who are getting used to wearing wedding rings): 1 in 4 men lose their wedding rings, and 1 in 7 women lose their wedding rings – often at the beginning of marriages

The perfect travel ring: if you enjoy travelling and don't want to worry about losing your expensive and irreplaceable wedding ring, then silicone rings are your prefect travel ring.

Hypoallergenic: Silicone is hypoallergenic, making it a great option for people with metal allergies.

Waterproof: Silicone rings are waterproof, so you can wear them while swimming or doing other water activities without having to take them off.

Overall, silicone rings offer a combination of safety, durability, comfort, style, affordability, and hypoallergenic properties which make them an appealing alternative for many people.

If you need more reasons, read our Ultimate Guide to Silicone Rings: What They Are and Why You Need One

Are silicone rings bendable?

Yes, silicone rings are flexible and soft. They can stretch over your knuckles, and contour around your finger like a cozy hug. have a gentle smooth curve on the inside, which enhances air flow and breathability of the ring. As a bonus, it also prevents the look of a finger muffin-top!

Are silicone rings durable?

Yes, silicone rings are durable if you take care of it! See our

Are there different silicone rings for men and women?

Silicone rings are unisex, and the ring sizing is based on the ring size standard, which is also unisex. Women in general have smaller hands, so a slimmer band can be more comfortable.


Can Silicone rings be engraved?

Yes! Silicone rings can be engraved with designs and text. Engraving your ring gift is one of the best ways to personalize it for your special person. Knot Theory pioneered engraving as the first to introduce We can engrave all the way around the ring, so you can fit as many as 22 characters onto each side of the ring. We are also one of the few brands with smooth ring interior, which means you can engrave something special (or naughty) on the inside of the ring too.

Can silicone rings get dirty?

Yes, but silicone rings are super easy to clean. Wash with mild soap and warm water, and they will look brand new again. See our

Can silicone rings melt?

Yes but very unlikely. Silicone can withstand high temperatures up to about 300°F (150°C) before beginning to deform. However, it's important to note that prolonged exposure to high temperatures or direct sunlight can cause the ring to lose its shape and become warped. So, it's best to avoid exposing silicone rings to extremely hot environments such as ovens, grills, or open flames. Also, it's important to make sure that the ring is not in contact with any hot surfaces or liquids. See our

Can you wear silicone rings in water?

Yes!


Could I be allergic to a silicone ring?

Silicone is a hypoallergenic material, and one of the most non-toxic materials available, so the chance of you being allergic to it is slim. Sometimes, if you have sensitive skin, you can develop a rash from wearing the silicone ring, and this is because some people are allergic to their own sweat. So it's important to keep your fingers fresh and dry.

The best way to keep your finger fresh and dry is to choose the right ring size so it fits comfortability with a little bit of breathing room on your finger. With the right ring size, check if your ring has a slight curve on the inside to help boost air flow.

are designed with a true comfort fit – a curved inner wall that enhances breathability. Some rings have “sweat gutters” on the inner wall, which can boost air flow, but can also trap moisture.

Do silicone rings fall off?

If your silicone ring is a good fit on your hand, no, it won't fall off. See our

If you are about to purchase a ring, make sure to download our

Do silicone rings fit tight?

No. With the right fit, silicone rings are the most comfortable ring money can buy. If you are about to purchase a ring, make sure to download our

Will hot water shrink a silicone ring?

Silicone is a heat-resistant material, so exposure to hot water will not shrink a silicone ring. However, exposing a silicone ring to extreme temperatures such as boiling water, or leaving it in a hot car for long periods of time, may cause the ring to warp or lose its shape. It is best to avoid exposing the ring to extreme heat. When cleaning your ring, you can use warm water and mild soap, then dry it with a soft cloth.

How do you take care of silicone rings?

See our

When do I need to take my silicone ring off?

The great thing about silicone rings that it is comfortable and safe for 24/7 wear.

With the right ring size and a breathable curved interior there should be enough breathing room between your finger and your silicone ring to keep your finger fresh and free of sweat build-up.

Yes, silicone rings are flexible and soft. They can stretch over your knuckles, and contour around your finger like a cozy hug.have a gentle smooth curve on the inside, which enhances air flow and breathability of the ring. As a bonus, it also prevents the look of a finger muffin-top!Yes, silicone rings are durable if you take care of it! See our complete care guide to maximize the longevity of your silicone ring.Silicone rings are unisex, and the ring sizing is based on the ring size standard, which is also unisex. Women in general have smaller hands, so a slimmer band can be more comfortable.Knot Theory was the first brand to design a silicone ring for women . In the early days of silicone rings, only bulky and thick bands in large sizes were available. As a woman looking out for fellow ladies, our founder Tanya Huang designed the first 4mm wide band with a slim profile, and made it available starting at size 4. She was also the first to create the rose gold silicone ring.

Yes! Silicone rings can be engraved with designs and text. Engraving your ring gift is one of the best ways to personalize it for your special person. Knot Theory pioneered engraving as the first to introduceWe can engrave all the way around the ring, so you can fit as many as 22 characters onto each side of the ring. We are also one of the few brands with smooth ring interior, which means you can engrave something special (or naughty) on the inside of the ring too.Yes, but silicone rings are super easy to clean. Wash with mild soap and warm water, and they will look brand new again. See our complete care guide to maximize the longevity of your ring.Yes but very unlikely. Silicone can withstand high temperatures up to about 300°F (150°C) before beginning to deform. However, it's important to note that prolonged exposure to high temperatures or direct sunlight can cause the ring to lose its shape and become warped. So, it's best to avoid exposing silicone rings to extremely hot environments such as ovens, grills, or open flames. Also, it's important to make sure that the ring is not in contact with any hot surfaces or liquids. See our complete care guide to maximize the longevity of your ring.Silicone is a hypoallergenic material, and one of the most non-toxic materials available, so the chance of you being allergic to it is slim. Sometimes, if you have sensitive skin, you can develop a rash from wearing the silicone ring, and this is because some people are allergic to their own sweat. So it's important to keep your fingers fresh and dry.The best way to keep your finger fresh and dry is to choose the right ring size so it fits comfortability with a little bit of breathing room on your finger. With the right ring size, check if your ring has a slight curve on the inside to help boost air flow. Knot Theory rings are designed with a true comfort fit – a curved inner wall that enhances breathability. Some rings have “sweat gutters” on the inner wall, which can boost air flow, but can also trap moisture.If your silicone ring is a good fit on your hand, no, it won't fall off. See our complete care guide to maximize the longevity of your ring.If you are about to purchase a ring, make sure to download our free ring sizer to get the best fit.No. With the right fit, silicone rings are the most comfortable ring money can buy. If you are about to purchase a ring, make sure to download our free ring sizer to get the best fit.Silicone is a heat-resistant material, so exposure to hot water will not shrink a silicone ring. However, exposing a silicone ring to extreme temperatures such as boiling water, or leaving it in a hot car for long periods of time, may cause the ring to warp or lose its shape. It is best to avoid exposing the ring to extreme heat. When cleaning your ring, you can use warm water and mild soap, then dry it with a soft cloth.See our complete care guide for everything you need to know to take care of your silicone rings.The great thing about silicone rings that it is comfortable and safe for 24/7 wear.With the right ring size and a breathable curved interior there should be enough breathing room between your finger and your silicone ring to keep your finger fresh and free of sweat build-up.

 

Here are a couple of situations, however, that might call for taking the silicone ring off:

• If the ring is too tight, it can cause sweat to be trapped under the ring, causing a rash. If this happens, make sure to give your finger time to freshen up and heal, and size up your ring.
• If you are using alcoholic hand sanitizers or other harsh chemicals, it's best to take off your silicone rings to prevent ring damage.
• Any activity that you feel is best to take the ring off. Even though silicone rings prevent ring injuries, it's important to exercise good judgment.

Can silicone rings rip fingers?

No, silicone rings exist to help prevent ring injuries caused by metal ring accidents. Ring avulsion (when metal ring is snagged and rips the ring off) and degloving (when metal ring is snagged and rips the skin on the finger off) are two of the common ring injuries.

Here are a couple of situations, however, that might call for taking the silicone ring off:• If the ring is too tight, it can cause sweat to be trapped under the ring, causing a rash. If this happens, make sure to give your finger time to freshen up and heal, and size up your ring.• If you are using alcoholic hand sanitizers or other harsh chemicals, it's best to take off your silicone rings to prevent ring damage.• Any activity that you feel is best to take the ring off. Even though silicone rings prevent ring injuries, it's important to exercise good judgment.No, silicone rings exist to help prevent ring injuries caused by metal ring accidents. Ring avulsion (when metal ring is snagged and rips the ring off) and degloving (when metal ring is snagged and rips the skin on the finger off) are two of the common ring injuries.

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