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 5835-00-949-3018
NSN 5998-01-433-1814
NSN 5975-00-817-4476
NSN 5965-01-093-0642
NSN 5930-00-276-9289
NSN 5855-01-111-3962
NSN 6320-01-422-1212
NSN 5910-01-652-8456
NSN 5975-00-753-6864
NSN 5905-01-324-1548
NSN 6220-00-216-7284
NSN 5855-01-591-7998