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 5925-00-926-0863
NSN 6220-00-026-9812
NSN 6220-00-553-8938
NSN 5905-01-386-3620
NSN 5990-01-641-2217
NSN 5990-01-216-0148
NSN 6110-00-397-3833
NSN 7035-01-530-8915
NSN 5905-00-394-1528
NSN 6220-01-332-3103
NSN 5855-01-038-2189
NSN 6150-00-080-2347