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 5925-01-421-4473
NSN 5855-01-620-0958
NSN 5895-01-297-6684
NSN 6685-00-916-5583
NSN 6645-01-447-3143
NSN 6620-01-151-3986
NSN 5905-01-275-0265
NSN 5975-00-925-9570
NSN 6650-01-620-2026
NSN 6645-01-562-1351
NSN 5999-01-462-0590
NSN 6320-01-052-2118