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 5920-00-280-5062
NSN 5975-01-131-4232
NSN 6110-01-328-0051
NSN 6620-01-305-3676
NSN 6685-00-006-2714
NSN 5960-01-177-0338
NSN 5915-00-437-6342
NSN 6240-01-202-5649
NSN 6150-01-167-2749
NSN 2925-01-507-3979
NSN 6130-00-075-2202
NSN 6645-00-137-7699