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 5950-00-949-2318
NSN 5855-00-916-2236
NSN 6645-01-310-2949
NSN 6610-01-025-2876
NSN 6220-01-154-3213
NSN 2925-01-479-3676
NSN 5930-00-263-0110
NSN 5990-01-227-0660
NSN 5996-00-176-0999
NSN 6620-01-394-4042
NSN 5985-01-007-6652
NSN 6620-00-244-0965