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 6240-01-365-1337
NSN 6650-01-512-9650
NSN 6240-01-386-4594
NSN 5950-01-235-9865
NSN 5985-01-422-4719
NSN 2925-00-081-3547
NSN 5975-01-285-1154
NSN 6685-00-369-5143
NSN 6620-00-280-2874
NSN 5925-00-364-7969
NSN 6650-01-027-1181
NSN 7035-00-803-3056