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 5996-00-859-6610
NSN 5910-01-412-0709
NSN 6145-00-495-7391
NSN 6220-01-555-8332
NSN 6135-00-248-4102
NSN 5950-01-238-2909
NSN 6240-01-648-6370
NSN 6685-00-927-6280
NSN 5990-01-407-6615
NSN 5945-00-498-7931
NSN 5855-00-089-3974
NSN 7035-01-433-3547