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 6135-00-125-5265
NSN 6645-00-095-6956
NSN 5945-00-067-6677
NSN 5835-00-051-9092
NSN 5965-00-052-9184
NSN 6145-00-100-4358
NSN 5930-00-299-3428
NSN 2925-01-206-6063
NSN 5950-01-645-4986
NSN 4140-01-048-5472
NSN 6130-01-025-1540
NSN 5999-01-109-6196