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 2925-01-531-0141
NSN 5945-01-269-4582
NSN 6220-01-105-6613
NSN 5985-01-124-9694
NSN 5905-01-106-3254
NSN 6145-01-656-5577
NSN 5925-00-880-3294
NSN 6610-01-276-7087
NSN 2925-01-542-5671
NSN 6620-00-193-9503
NSN 5975-00-575-9446
NSN 4140-01-584-3710