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 5985-00-156-4536
NSN 6320-01-607-1491
NSN 5855-00-586-6255
NSN 4140-01-091-5592
NSN 6105-00-827-0616
NSN 6685-00-485-5781
NSN 5920-00-175-7987
NSN 2925-00-149-0760
NSN 5985-00-597-2966
NSN 5925-01-649-2835
NSN 6240-00-253-7611
NSN 6645-01-426-3378