Neoprene (CR) O-Ring

It is moderately resistant to both petroleum oils and weather (ozone, UV, oxygen). Neoprene is classified as a general purpose elastomer which has relatively low compression set, good resilience and abrasion, and is flex cracking resistant with a temperature range of -30°F to 212°F. It is used extensively for sealing refrigeration fluids due to its excellence resistance to Freon^® and ammonia.