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 6320-00-937-5625
NSN 6105-01-169-8019
NSN 5925-00-796-0679
NSN 6240-01-652-9111
NSN 6150-00-005-6550
NSN 5950-00-496-8564
NSN 6135-01-301-8776
NSN 6685-01-490-3505
NSN 5975-01-616-5477
NSN 6110-01-017-5428
NSN 6150-01-398-9850
NSN 6220-01-660-9961