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 6110-00-111-2761
NSN 6135-01-142-2417
NSN 6645-00-720-3953
NSN 5965-01-455-9965
NSN 5920-01-352-7223
NSN 6220-00-541-8515
NSN 6610-01-502-3057
NSN 5855-01-010-4921
NSN 5985-01-649-1447
NSN 5965-01-015-0744
NSN 6685-01-602-3797
NSN 5996-01-461-3464