Product Details | O-RING

5331-01-278-9646 A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see PACKING,PREFORMED. For noncircular items with a round cross-section, see SEAL,NONMETALLIC ROUND SECTION and RUBBER,ROUND SECTION.

Part Alternates: 1557052-18, 5331-01-278-9646, 01-278-9646, 5331012789646, 155705218, 012789646

Hardware and Abrasives | O-Ring

Supply Group (FSG) NSN Assign. NIIN
53 11 MAY 1988 01-278-9646

Demand History | NSN 5331-01-278-9646

Part Number Request Date QTY Origin
1557052-18 2025-08-230 698 DIBBS
1557052-18 2025-08-219 698 DIBBS
1557052-18 2025-06-181 600 DIBBS
1557052-18 2025-06-168 600 DIBBS
5331-01-278-9646 2021-03-88 705 DIBBS
5331-01-278-9646 2015-05-148 1183 DIBBS
5331-01-278-9646 2015-03-78 264 DIBBS
5331-01-278-9646 2015-02-56 264 DIBBS
5331-01-278-9646 2014-06-167 50 DIBBS
5331-01-278-9646 2014-04-108 62 DIBBS
5331-01-278-9646 2014-04-97 62 DIBBS

Cross Reference | NSN 5331-01-278-9646

Part Number Cage Code Manufacturer
1557052-18 02697 PARKER-HANNIFIN CORPORATION DBA O'RING DIVISION OF PARKER
1557052-18 10001 NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT
1557052-18 25184 PARKER HANNIFIN CORPORATION DIV O-RING DIVISION

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Technical Data | NSN 5331-01-278-9646

Characteristic Specifications
MATERIAL RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CENTER HOLE DIAMETER 0.734 INCHES MINIMUM AND 0.744 INCHES MAXIMUM
CROSS-SECTIONAL HEIGHT 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM

Restrictions/Controls & Freight Information | NSN 5331-01-278-9646

Category Code Description
Shelf-Life Code:Y180 months
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
NMF Description 194120 WASHERS/GASKETS/PCKG DVCS NOI
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 596 unknown
Originating Activity Code KZ Defense Supply Center Philadelphia
Philadelphia, PA 19101
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 5331-01-278-9646

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesDDoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life CodeY180 months
Purchasing QTY
UOM
1
EA : Each