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 5999-00-186-0058
NSN 6105-01-260-2507
NSN 5945-00-883-6628
NSN 6220-01-010-1452
NSN 5905-01-373-9885
NSN 6685-00-869-5756
NSN 6320-01-390-5385
NSN 6610-00-495-1344
NSN 5930-00-167-4520
NSN 5930-01-469-5426
NSN 5925-01-585-1604
NSN 6320-01-125-3361