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 6135-01-515-6600
NSN 5935-01-399-8732
NSN 6320-01-607-0347
NSN 5925-00-529-0441
NSN 5925-00-655-1409
NSN 5855-01-484-9948
NSN 6645-01-554-9772
NSN 5905-01-424-1434
NSN 6320-01-624-0193
NSN 6650-01-583-0798
NSN 5950-01-123-8992