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 2925-01-660-0669
NSN 2925-01-461-6372
NSN 7035-01-432-2424
NSN 5965-01-373-8858
NSN 5999-00-576-8257
NSN 5999-00-661-0954
NSN 5965-01-254-6527
NSN 5985-01-152-5851
NSN 5965-01-362-5624
NSN 6320-01-181-9474
NSN 5855-01-216-7633
NSN 6320-01-659-2819