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 2925-01-387-0870
NSN 6620-01-580-0883
NSN 5855-01-175-2465
NSN 5985-00-946-9341
NSN 6620-00-140-8644
NSN 5925-01-064-1086
NSN 6685-01-414-1296
NSN 5975-00-012-0095
NSN 6685-00-575-4647
NSN 6240-01-647-5963
NSN 5925-00-402-7768
NSN 6240-01-514-7114