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 5990-00-679-6157
NSN 5925-01-375-6048
NSN 5975-00-856-8408
NSN 5965-01-362-9609
NSN 6645-00-200-2324
NSN 5905-01-439-7644
NSN 6320-00-456-0836
NSN 6220-01-421-9928
NSN 5915-01-433-3550
NSN 5999-01-184-1396
NSN 6685-00-946-1036
NSN 6105-00-486-3875