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 5975-01-192-7305
NSN 6610-01-559-5073
NSN 2925-01-029-5300
NSN 5855-01-191-3404
NSN 6150-00-770-2876
NSN 6150-01-487-4525
NSN 5920-01-362-3866
NSN 5930-00-926-0880
NSN 5925-01-544-0001
NSN 5965-01-561-3139
NSN 5996-01-275-3835
NSN 5950-01-032-0669