PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11171Seal,plain Encased

Skf Usa Inc. Dba Skf Aerospace Sealing Solutions · NSN 5330-00-945-6684 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-945-6684 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-945-6684. Primary manufacturer part number: 11171.
Features
  • Seal,plain Encased — FSC 5330
  • Accommodated Shaft Diameter: 1.125 INCHES NOMINAL IN
  • Sealing Element Style: ANGULAR-OPPOSED
  • Surface Treatment: PLASTIC CASE
  • Housing Bore Diameter: 1.828 INCHES NOMINAL IN
  • Outside Diameter: 1.832 INCHES NOMINAL IN
  • Material: RUBBER POLYISOPRENE NATURAL CLASS NR OR RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR OR RUBBER BUTADIENE-STYRENE CLASS SBR OR RUBBER POLYSULFIDE CLASS T OR RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER CHLOROPRENE CLASS CR OR RUBBER SILICONE CLASS Q OR RUBBER POLYACRYLATE CLASS ACM SEALING ELEMENT A
  • Material Document and Classification: MIL-S-645 MIL SPEC SINGLE MATERIAL RESPONSE CASE
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Polyisoprene Natural Class Nr or Rubber Isobutylene-Isoprene Class Iir or Rubber Butadiene-Styrene Class Sbr or Rubber Polysulfide Class T or Rubber Butadiene-Acrylonitrile Class Nbr or Rubber Chloroprene Class Cr or Rubber Silicone Class Q or Rubber Polyacrylate Class Acm Sealing Element a construction
General Description

The Seal,plain Encased, cataloged under National Stock Number 5330-00-945-6684, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Skf Usa Inc. Dba Skf Aerospace Sealing Solutions. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-945-6684
Primary Part Number11171
Item NameSeal,plain Encased
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerSkf Usa Inc. Dba Skf Aerospace Sealing Solutions
StatusCANCELLED
Accommodated Shaft Diameter1.125 INCHES NOMINAL IN
Sealing Element StyleANGULAR-OPPOSED
Surface TreatmentPLASTIC CASE
Housing Bore Diameter1.828 INCHES NOMINAL IN
Outside Diameter1.832 INCHES NOMINAL IN
MaterialRUBBER POLYISOPRENE NATURAL CLASS NR OR RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR OR RUBBER BUTADIENE-STYRENE CLASS SBR OR RUBBER POLYSULFIDE CLASS T OR RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER CHLOROPRENE CLASS CR OR RUBBER SILICONE CLASS Q OR RUBBER POLYACRYLATE CLASS ACM SEALING ELEMENT A
Material Document and ClassificationMIL-S-645 MIL SPEC SINGLE MATERIAL RESPONSE CASE
Accommodated Shaft Maximum Rated Speed3600 FEET PER MINUTE FT
Seal Width0.250 INCHES NOMINAL IN
MaterialSTEEL UNS K01602 CASE
Case StyleSQUARE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2990-00-076-1829 INTERCHANGEABLE
Friction Shoe Assembly
5360-00-119-2002 INTERCHANGEABLE
Spring
3110-00-144-8671118994 INTERCHANGEABLE
Bearing,ball,annular
Komatsu America Corp.
5310-00-266-41400P711 INTERCHANGEABLE
Nut,plain,hexagon
Blaw-Knox Construction Equipment Co Div of White Consolidated Industries Inc
5360-00-300-6114300-9A INTERCHANGEABLE
Spring,helical,compression
Magnatrol Valve Corp Div Clark-Cooper
1670-00-799-849411-1-71 INTERCHANGEABLE
Release,cargo Parachute
W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center
5330-00-933-358811657684 INTERCHANGEABLE
Seal,plain Encased
U S Army Tank Automotive Command Amsta-Im-Mm
5330-01-083-6381 INTERCHANGEABLE
Seal
5310-01-149-9541292050J58 INTERCHANGEABLE
Nut,special
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
2530-01-157-4399 INTERCHANGEABLE
Cylinder Assembly,actuating,line
Cross-Reference Index
Part NumberManufacturer
11171 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
9995649 Us Army Aviation and Missile Command (USA)
319W227-73 Zf Industrieantriebe Witten Gmbh (DEU)
DH37D1-0000 Imo Industries Inc Delroyd Worm Gear Div (USA)
Related Parts
2990-00-076-1829INTERCHANGEABLE
FRICTION SHOE ASSEMBLY
5360-00-119-2002INTERCHANGEABLE
SPRING
3110-00-144-8671INTERCHANGEABLE
BEARING,BALL,ANNULAR
118994
5310-00-266-4140INTERCHANGEABLE
NUT,PLAIN,HEXAGON
0P711
5360-00-300-6114INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
300-9A
1670-00-799-8494INTERCHANGEABLE
RELEASE,CARGO PARACHUTE
11-1-71
5330-00-933-3588INTERCHANGEABLE
SEAL,PLAIN ENCASED
11657684
5330-01-083-6381INTERCHANGEABLE
SEAL
5310-01-149-9541INTERCHANGEABLE
NUT,SPECIAL
292050J58
2530-01-157-4399INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
5360-01-173-5742INTERCHANGEABLE
SPRING,VALVE,BRAKE
11171
4320-01-205-1110INTERCHANGEABLE
RING,WEARING
517-2295696 PC4A

Frequently Asked Questions

What is NSN 5330-00-945-6684?

NSN 5330-00-945-6684 is a Seal,plain Encased, manufactured by Skf Usa Inc. Dba Skf Aerospace Sealing Solutions, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-945-6684?

NSN 5330-00-945-6684 has 4 cross-referenced part numbers: 11171 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 9995649 (Us Army Aviation and Missile Command), 319W227-73 (Zf Industrieantriebe Witten Gmbh), DH37D1-0000 (Imo Industries Inc Delroyd Worm Gear Div).

What NSN replaces 5330-00-945-6684?

There are 12 known substitutes for 5330-00-945-6684: 2990-00-076-1829, 5360-00-119-2002, 3110-00-144-8671 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11171?

Key specifications for 11171: Accommodated Shaft Diameter: 1.125 INCHES NOMINAL IN; Sealing Element Style: ANGULAR-OPPOSED; Surface Treatment: PLASTIC CASE; Housing Bore Diameter: 1.828 INCHES NOMINAL IN. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-945-6684 still in active supply?

NSN 5330-00-945-6684 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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