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 5975-00-791-2835
NSN 6110-01-089-8130
NSN 6320-00-284-1524
NSN 6145-01-179-6630
NSN 6645-01-386-6311
NSN 5935-01-602-8714
NSN 6620-00-162-9877
NSN 6685-01-308-8891
NSN 6620-01-239-1427
NSN 6150-01-010-2988
NSN 6135-01-354-5535
NSN 2925-01-178-0063