5330-00-559-8871 PACKING,PREFORMED Index 5331-00-559-8878 O-RING

National Stock Number:
5330-00-559-8872

Federal Supply Class:
5330

National Item Identification Number:
005598872

Description:
PACKING,PREFORMED

Detail:
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.


Manufacturer Information:
1955760RAPC1280064NAVAL SHIP SYSTEMS COMMAND
73785-80X2PC1296169ELECTRIC BOAT CORPORATION
N304-7-Q3602697PARKER-HANNIFIN CORP
PS1-30-5-Q3602697PARKER-HANNIFIN CORP


Techincal Specification:
ELONGATION PERCENTAGE164 MAXIMUM
CENTER HOLE DIAMETER2.500 INCHES NOMINAL
CROSS-SECTIONAL HEIGHT0.188 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLESPECIAL
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL OVERALL
MATERIALRUBBER SYNTHETIC OVERALL
PERIPHERAL DIAMETER2.875 INCHES NOMINAL
TEMP RATING-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT


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