A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6620-00-769-7303
NSN 6685-01-367-2927
NSN 2925-01-252-8049
NSN 7035-01-580-0957
NSN 5930-00-349-7017
NSN 5985-01-487-4984
NSN 6105-01-623-6204
NSN 6320-00-107-5291
NSN 6105-01-143-5774
NSN 5915-01-633-9845
NSN 6145-01-175-9358
NSN 6320-01-072-2073