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 5960-00-082-0039
NSN 5925-00-007-3962
NSN 4140-01-644-4489
NSN 6685-01-505-7941
NSN 6110-01-427-0161
NSN 5895-00-153-9445
NSN 5920-01-121-0740
NSN 4140-00-266-9132
NSN 6220-00-081-6429
NSN 5935-01-351-0200
NSN 5905-01-201-7845
NSN 5950-01-352-0960