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 5920-01-123-9358
NSN 6220-00-707-5044
NSN 6645-01-371-1632
NSN 5990-00-132-5177
NSN 5905-01-234-7405
NSN 5925-00-795-4958
NSN 6620-00-992-5876
NSN 5925-00-862-6719
NSN 5975-01-632-6673
NSN 6610-01-386-4582
NSN 6320-01-173-7950
NSN 5920-01-426-2994