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 5975-01-060-2197
NSN 6145-00-760-8959
NSN 2925-00-373-8837
NSN 6620-00-079-0311
NSN 6130-01-072-2511
NSN 7035-01-633-9537
NSN 6145-01-378-2553
NSN 5855-00-361-0167
NSN 6135-01-328-6583
NSN 5910-00-238-3698
NSN 5925-01-570-6132
NSN 6105-01-190-9522