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 6685-01-290-3124
NSN 6135-01-333-6101
NSN 6320-01-281-3341
NSN 5930-00-110-3035
NSN 5950-01-450-8738
NSN 5910-00-324-3017
NSN 4140-01-452-2980
NSN 5930-01-004-9916
NSN 6645-01-215-3629
NSN 5975-01-475-8781
NSN 5930-01-646-1842
NSN 6145-01-535-4279