PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56-977Seal,plain

Bfgoodrich-Messier Inc · NSN 5330-01-664-8335 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-664-8335 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-664-8335. Primary manufacturer part number: 56-977.
Features
  • Seal,plain — FSC 5330
  • 1 verified cross-reference
  • Primary manufacturer: Bfgoodrich-Messier Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,plain, cataloged under National Stock Number 5330-01-664-8335, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bfgoodrich-Messier Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-664-8335
Primary Part Number56-977
Item NameSeal,plain
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerBfgoodrich-Messier Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5305-00-979-7806 INTERCHANGEABLE
Setscrew
Cross-Reference Index
Part NumberManufacturer
56-977 PRIMARY Bfgoodrich-Messier Inc (USA)
Related Parts
5305-00-979-7806INTERCHANGEABLE
SETSCREW

Frequently Asked Questions

What is NSN 5330-01-664-8335?

NSN 5330-01-664-8335 is a Seal,plain, manufactured by Bfgoodrich-Messier Inc, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-664-8335?

NSN 5330-01-664-8335 has 1 cross-referenced part number: 56-977 (Bfgoodrich-Messier Inc).

What NSN replaces 5330-01-664-8335?

There is 1 known substitute for 5330-01-664-8335: 5305-00-979-7806. Verify interchangeability with system specifications before substitution.

What are the specifications of 56-977?

Key specifications for 56-977: Part Name Assigned by Controlling Agency: RETAINER - GREASE, INNER; End Item Identification: MRTT. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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