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 6145-00-081-3217
NSN 2925-01-359-4027
NSN 5985-01-616-9647
NSN 6685-00-446-9552
NSN 6110-01-191-5737
NSN 6685-01-593-2463
NSN 6320-01-202-8761
NSN 5935-01-319-5223
NSN 5855-01-393-8749
NSN 6145-00-044-6673
NSN 6685-00-896-4776
NSN 5895-01-045-8844