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 5925-00-505-7579
NSN 5950-01-093-7622
NSN 4140-01-043-5089
NSN 5950-01-362-4006
NSN 6240-01-423-8642
NSN 5905-01-303-0677
NSN 4140-00-230-4252
NSN 6685-01-214-0250
NSN 6150-01-474-6532
NSN 5975-00-168-4429
NSN 5895-01-349-5830
NSN 2925-01-434-6945