Neoprene also known as choloprene is a widely used elastomer in the o-ring and seal industry due its to overall properties ratings and its relatively low cost. Neoprene exhibits both moderate resistance to petroleum oils as well as weather elements such as, UV and oxygen. This allows neoprene o-rings and seals to preform exceedingly well in applications where many other elastomers would not be satisfactory. Neoprene is a general purpose elastomer which exhibits low compression set, good resilience, and is both flex and cracking resistant. Finally, neoprene has excellent resistances to both ammonia and Freon, making it prime choice of elastomers in the refrigeration and heating and air industries. The neoprene AS110-70NE o-ring can be reference in one of four ways:
The final consideration for an o-ring after size and material type is the durometer. Durometer is an industry standard measurement for a material’s hardness. Most often for rubber seals, durometer is measured and listed in accordance with the “Shore A” scale. Typical durometers for standard rubber seals are 70, 75 and 90, depending on the material. A higher number indicates a harder material. Durometer is also generally stated and accepted with a “+/- 5” tolerance. For neoprene o-rings, the standard nominal durometer is 70.
O-Rings, rubber seals and custom molded rubber components for:
AS568-110 (Durometer 70) cross reference sizes
