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 5910-00-269-3714
NSN 6320-01-443-8676
NSN 5835-00-707-6266
NSN 6645-00-505-6026
NSN 5950-01-145-7774
NSN 5930-01-302-4886
NSN 4140-01-132-6612
NSN 6150-01-160-5273
NSN 5925-01-371-2876
NSN 5985-00-734-7479
NSN 6650-01-210-2080
NSN 5905-01-389-4085