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 5895-00-872-4276
NSN 5975-00-283-3665
NSN 5915-01-529-9418
NSN 6220-00-728-9536
NSN 5990-00-061-9041
NSN 6610-01-144-8401
NSN 5975-00-057-7123
NSN 6650-01-509-8018
NSN 6145-01-284-3051
NSN 5910-01-243-6766
NSN 5998-00-104-4633
NSN 5920-01-451-4260