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 6130-00-032-4859
NSN 5998-01-122-7456
NSN 5855-01-624-7115
NSN 5855-01-187-2293
NSN 5925-01-174-1562
NSN 5930-01-141-5842
NSN 6220-01-410-7555
NSN 5915-01-580-0308
NSN 2925-00-595-7525
NSN 5905-01-578-5318
NSN 5835-00-393-1996
NSN 7035-01-186-5786