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 5950-00-669-5873
NSN 6685-01-013-8572
NSN 5975-01-595-3991
NSN 5905-00-429-2619
NSN 5895-01-214-9145
NSN 6685-01-519-0675
NSN 5925-01-624-4573
NSN 5855-00-089-3974
NSN 6220-01-096-5286
NSN 5915-00-078-9574
NSN 5895-01-535-6325
NSN 5935-01-343-3638