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 6320-00-925-0558
NSN 4140-01-514-0934
NSN 5855-01-323-5394
NSN 6645-00-285-8781
NSN 5996-00-016-1528
NSN 6320-01-544-6447
NSN 5999-01-376-5601
NSN 6620-01-590-3295
NSN 5835-00-061-5717
NSN 5945-01-211-6085
NSN 5985-00-270-8456
NSN 6685-01-443-3284