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 6320-00-300-4452
NSN 5960-01-252-8821
NSN 5915-00-301-3818
NSN 5905-00-243-9520
NSN 6105-00-287-8971
NSN 5920-00-851-4740
NSN 5855-01-600-0003
NSN 6220-00-606-6119
NSN 6610-00-011-9991
NSN 6685-01-173-1506
NSN 5935-00-356-9916
NSN 6130-01-042-6870