O-Rings
O-Rings are round seals that are commonly made from various types of rubber materials, and they are utilized in millions of different applications across multiple industries. Raleigh Durham Rubber & Gasket stands out as your premier o-ring supplier in North Carolina, dedicated to providing high-quality products. We maintain an extensive stock featuring a vast selection of the most common sizes and materials, along with convenient o-ring kits, versatile o-ring cord, and effective splicing kits for all your sealing needs. Our offerings include buna o-rings, neoprene o-rings, Viton o-rings (FKM), Teflon o-rings (PTFE), urethane o-rings, silicone o-rings, as well as specialty square rings and quad rings. If you require assistance with choosing the right o-rings for your application, please do not hesitate to contact our knowledgeable and friendly staff today for expert advice and support!
WE MAKE CUSTOM O-RINGS & SEALS!
Nitrile (BUNA-N) O-Rings
Nitrile rubber (NBR), also known as Buna N, is one of the most commonly used sealing elastomers due to its resistance to petroleum‐based fuels and lubricants and its relatively low price. Nitrile elastomers are copolymers of acrylonitrile and butadiene. There are a number of common variations of nitrile compounds. Most common in 70 & 90 durometer.
Viton® (Fluorocarbon, FKM) O-Rings
Fluorocarbon is a well‐known high‐performance rubber that has excellent resistance to high temperature, ozone, weather, oxygen, mineral oil, fuels, hydraulic fluids, aromatics and many organic solvents and chemicals. Most common in 75 & 90 durometer.
Neoprene O-Rings
Chloroprene (CR), also known by its trade name “Neoprene”, was one of the first successful synthetic elastomers in 1931 made by Dupont. It is prepared by emulsion polymerization of chloroprene, or 2‐ chlorobutadiene. CR is a multi‐purposed elastomer which yields a balanced combination of properties. It performs well in contact with oils and many chemicals and has good resistance to sun, ozone and weather. It also displays outstanding toughness and good resistance to fire.
EPDM (EPR) O-Rings
Ethylene Propylene Rubber (EPDM) is a Copolymer of ethylene and propylene. Furthermore, it is a terpolymer of ethylene and propylene with a small amount of a third monomer (usually a diolefin) to permit vulcanization with sulfur. Generally, EPDM possesses an excellent resistance to ozone, sunlight and weathering, and has very good flexibility at low temperature, good chemical resistance (many dilute acids and alkalis as well as polar solvents) and good electrical insulation property.
Silicone O-Rings
Physically, silicones are based on silicon, an element derived from quartz. To create this class of synthetic elastomers, pendant organic groups such as methyl, phenyl and vinyl are attached to silicon atoms. Different additions of side chains can achieve significant variations in properties. Silicones have excellent heat, ozone and corona resistance and have good dielectric stability and resistance to many oils, chemicals and solvents. Silicones possess the best flexible property at low temperature but have low tensile strength and poor wear and tear resistance.
Teflon (PTFE) O-Rings
Polytetrafluoroethylene (PTFE) is a high molecular weight polymer, one of the most versatile plastic materials known and useful for a large range of products for applications excluded to other materials. PTFE is generally considered a thermoplastic polymer; at 327C (620.6F) it retains a very high viscosity, thus requiring particular transformation techniques for manufacturing of finished and semi‐finished goods. PTFE can be used in a temperature range from ‐200C (‐328F) to +260C (500F).
Polyurethane O-Rings
The millable Polyurethane (PU) rubbers are distinguished into two types; the first is polyester urethane (AU) and the other is polyether urethane (EU). AU type urethanes have outstanding oil, fuel and solvent resistance but can be attacked by hydrolysis. EU type urethanes are not attacked by hydrolysis and still offer a fuel and oil resistance comparable to low ACN (18 to 22% ACN) Nitriles or HNBRs. Any type polyurethane has excellent wear resistance, high tensile strength and high elasticity in comparison with any other elastomers. We can also offer any type thermoplastic urethane (TPU).
Other O-Ring related Products
-Square Rings
-Quad Rings
-O-Ring Cord
-O-Ring Kits
-Metric O-Rings
-Hydraulic O-Ring Kits
-O-Ring Splicing Kits
-O-Ring Glue
-Custom O-rings