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 2925-00-899-4261
NSN 5910-01-224-0568
NSN 6145-01-270-9357
NSN 6135-00-297-8873
NSN 5925-00-128-9376
NSN 6220-01-003-7440
NSN 5996-00-878-7890
NSN 5930-01-539-0580
NSN 5975-01-600-5724
NSN 5998-01-470-7862
NSN 6135-00-062-5080
NSN 5930-00-333-6127