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 6610-01-210-8493
NSN 5999-01-100-1872
NSN 4140-01-275-8821
NSN 5925-01-136-9730
NSN 6145-01-257-4465
NSN 5975-00-815-2160
NSN 6650-01-010-4204
NSN 6105-00-435-9982
NSN 6685-01-138-5879
NSN 6645-01-356-1181
NSN 5960-01-429-2168
NSN 5910-01-175-6171