Ace Glass 7855-642 O-Ring, Kalrez, Size 220

Features:

• Compared with other elastomers, KALREZ is normally more resistant to swelling and embrittlement and will retain these properties for a longer period of time.
• Compared with metal seals, KALREZ is easily installed and conforms to the sealing surface despite irregularities due to improper assembly or wear.
• Compared with PTFE seals, KALREZ is not likely to creep or cold flow.

Offer the resilience and sealing force of an elastomer with chemical inertness and thermal stability similar to PTFE fluorocarbon resin.

Chemical Resistance

• KALREZ has excellent chemical resistance, far above that of other commercial elastomers. KALREZ should be considered for service in hot, corrosive environments.
• Polar solvents (ketones, esters, ethers)
• Strong org-anic solvents (benzene, dimethyl formamide, perchloroethylene, tetrahydrofuran (THF)
• Inorga-nic and orga-nic acids (hydrochloric, nitric, sulfuric, trichloroacetic) and bases (hot caustic soda)
• Strong oxidizing agents (dinitrogen tetroxide, fuming nitric acid)
• Metal halogen compounds (titanium tetrachloride, diethylaluminum chloride)
• Hot mercury/caustic soda
• Chlorine, wet or dry
• Inorg-anic salt solutions
• Fuels (ASTM Reference Fuel C, JP-5 Jet Fuel, aviation gas, kerosene)
• Hydraulic fluids (SKYDROL1, 500A, PYDRAUL1 312, ANDEROL2 L-774, and transmission fluids)
• Heat transfer fluids (DOWTHERM3A)
• Oil well sour gas (methane, hydrogen sulfide/carbon dioxide/steam)
• Steam

Thermal Stability

KALREZ O-Rings retain their elastic properties in long-term service at temperatures as high as 316°C and in intermittent service up to 327°C.