Rubber compounds are a mixture of polymers, fillers, anti-oxitives and curatives. Various combinations can improve specific properties. Special compounds can be made to broaden temperature range or improve fluid resistance. These may add to lead time, but can lead to better application performance.
- Hydrogenated Nitrile
- Liquid Silicone Rubber
- Medical Ethylene Propylene
- Medical Fluorocarbon
- Medical Grade Silicone
- Natural Rubber
- Nitrile (Buna-N)
- Nitrile (Buna-N)
- Polyurethane, Cast
- Polyurethane, Millable
- Styrene Butadiene
- Teflon® Virgin
- Vamac® [Ethylene / Acrylic]
- Viton® . . . DuPont Performance Elastomers
- Fluorel . . . 3M Company
- Technoflon . . . Solvey Solexis, USA
ASTM D1418 Designation: FKM
ASTM D2000/SAE Type, Class: HK
Apple Compound Designation: VT
Standard Color: Black
Description: Combining high temperature resistance with outstanding chemical resistance, Fluorocarbon-based compounds approach the ideal for a universal O-ring material.
Key Use(s): Seals for aircraft engines. Seals for automotive fuel handling systems. High temperature/low compression set applications. Wide chemical exposure situations. Hard vacuum service.
Standard Compound: -13° to +446°F
Special Compound: -40° to +446°F
Hardness (Shore A): 55 to 90.
Features:High fluorine grades offer higher resistance to swell in high octane and oxygenated fuel blends. This give superior performance in Ethanol/Methanol blended gasoline. Base resistant grades offer improved resistance to amine based oil protectants found in new transmission oils. Also, improved resistant to steam for higher temperature services. Low temperature bases can improve performance to -40°F.
New Polymers being offered have improved chemical resistance and low temperature performance.
Viton® Extreme™ ETP offers similar chemical compatibility as Kalrez™ with temperature performance with a TR(10) of -40°F and brittleness to -76°.
Limitations: Fluorocarbons (Viton®s) are not recommended for exposure to ketones, amines, low molecular weight esters and ethers, nitro hydrocarbons, hot hydrofluoric or chlorosulfonic acids, or Skydrol® fluids. They are also not recommended for situations requiring good low temperature flexibility.
Recognizing seal feedability problems during the production process often occurs too late for a simple solution. That’s why we created a video that outlines exactly what you need to be on the lookout for.