PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

638-05-508-0008Seal,plain

Renold Inc Div Ajax · NSN 5330-01-255-0136 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-255-0136 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-255-0136. Primary manufacturer part number: 638-05-508-0008.
Features
  • Seal,plain — FSC 5330
  • Outside Diameter: 80.2 MILLIMETERS NOMINAL MM
  • Seal Width: 8.000 INCHES NOMINAL IN
  • Construction: SOLID
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
  • Surface Treatment: PLASTIC CASE
  • Cross-Sectional Shape Style: SINGLE LIP
  • Housing Bore Diameter: 80.000 INCHES NOMINAL IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr Sealing Element construction
General Description

The Seal,plain, cataloged under National Stock Number 5330-01-255-0136, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Renold Inc Div Ajax. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-255-0136
Primary Part Number638-05-508-0008
Item NameSeal,plain
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerRenold Inc Div Ajax
StatusACTIVE
Outside Diameter80.2 MILLIMETERS NOMINAL MM
Seal Width8.000 INCHES NOMINAL IN
ConstructionSOLID
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
Surface TreatmentPLASTIC CASE
Cross-Sectional Shape StyleSINGLE LIP
Housing Bore Diameter80.000 INCHES NOMINAL IN
Accommodated Shaft Diameter55.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-209-5116 INTERCHANGEABLE
Washer,lock
5355-00-604-37401168879 INTERCHANGEABLE
Knob
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4730-00-736-925621640 INTERCHANGEABLE
Packing Nut
Schneider Electric Systems Usa Inc
3040-01-294-3267 INTERCHANGEABLE
Worm Shaft
5330-01-328-432721640 INTERCHANGEABLE
Retainer,packing
Parker Hannifin Corporation Div Hydraulic Systems Division
5930-01-674-567021-640 INTERCHANGEABLE
Switch,centrifugal
Pollak Joseph Corp
Cross-Reference Index
Part NumberManufacturer
21640 Caci Nss, Inc. Dba Stratis Division Div Stratis (USA)
638-05-508-0008 PRIMARY Renold Inc Div Ajax (USA)
21640 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
Related Parts
5310-00-209-5116INTERCHANGEABLE
WASHER,LOCK
5355-00-604-3740INTERCHANGEABLE
KNOB
1168879
4730-00-736-9256INTERCHANGEABLE
PACKING NUT
21640
3040-01-294-3267INTERCHANGEABLE
WORM SHAFT
5330-01-328-4327INTERCHANGEABLE
RETAINER,PACKING
21640
5930-01-674-5670INTERCHANGEABLE
SWITCH,CENTRIFUGAL
21-640

Frequently Asked Questions

What is NSN 5330-01-255-0136?

NSN 5330-01-255-0136 is a Seal,plain, manufactured by Renold Inc Div Ajax, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-255-0136?

NSN 5330-01-255-0136 has 3 cross-referenced part numbers: 21640 (Caci Nss, Inc. Dba Stratis Division Div Stratis), 638-05-508-0008 (Renold Inc Div Ajax), 21640 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions).

What NSN replaces 5330-01-255-0136?

There are 6 known substitutes for 5330-01-255-0136: 5310-00-209-5116, 5355-00-604-3740, 4730-00-736-9256 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 638-05-508-0008?

Key specifications for 638-05-508-0008: Outside Diameter: 80.2 MILLIMETERS NOMINAL MM; Seal Width: 8.000 INCHES NOMINAL IN; Construction: SOLID; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT. 8 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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