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 5905-00-025-7000
NSN 6130-01-406-2264
NSN 6220-01-659-6403
NSN 6240-00-527-8614
NSN 6645-01-367-2581
NSN 5990-01-652-7373
NSN 5985-00-143-8134
NSN 5925-01-126-4761
NSN 5915-01-116-2932
NSN 5965-01-655-1457
NSN 6220-00-858-4831
NSN 5990-01-238-1975