PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G-37Ring,wiper

Gayle George W and Son · NSN 5330-00-640-8557 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-640-8557 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-640-8557. Primary manufacturer part number: G-37.
Features
  • Ring,wiper — FSC 5330
  • Cross-Sectional Shape Style: OUTSIDE GROOVED, STRAIGHT FACE
  • Ring Style: CONCENTRIC
  • Outside Diameter: 4.407 INCHES NOMINAL IN
  • Joint Style: DIAGONAL JOINT
  • Outer Edge Thickness: 0.125 INCHES NOMINAL IN
  • Inside Diameter: 4.000 INCHES NOMINAL IN
  • FSC Application Data: HYDRAULIC SYSTEM,ACFT
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Ring,wiper, cataloged under National Stock Number 5330-00-640-8557, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Gayle George W and Son. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-00-640-8557
Primary Part NumberG-37
Item NameRing,wiper
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerGayle George W and Son
StatusCANCELLED
Cross-Sectional Shape StyleOUTSIDE GROOVED, STRAIGHT FACE
Ring StyleCONCENTRIC
Outside Diameter4.407 INCHES NOMINAL IN
Joint StyleDIAGONAL JOINT
Outer Edge Thickness0.125 INCHES NOMINAL IN
Inside Diameter4.000 INCHES NOMINAL IN
FSC Application DataHYDRAULIC SYSTEM,ACFT
Material Thickness0.156 INCHES NOMINAL IN
Test Data Document81349-MIL-S-5049 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
4730-01-105-072312060 INTERCHANGEABLE
Grease Fitting,special
Vtf Inc Dba Sun Enterprises
4720-01-148-27627838941 INTERCHANGEABLE
Hose Assembly,nonmetallic
General Motors Llc Dba General Motors Llc
Cross-Reference Index
Part NumberManufacturer
G-37 Gayle George W and Son (USA)
MIL-S-5049 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS28776M2-37 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
FWR-3C-37 Ace Products Co of Toledo Inc Dba Ace Products (USA)
GI 1171-37 Gad-Jets Inc Dba Associated Technical Sales (USA)
MIL-R-5049 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
OAS-37 Greene Tweed and Co Advantec Div (USA)
DRI-37 Delta Mfg and Sales Inc (USA)
197S37 Honeywell International Inc Div Aerospace-South Bend (bendix Dr) (USA)
ISR-37 Industrial Supplies (USA)
SRC-37 Scrapper Rings Co Div of Roberts Tool Co (USA)
Related Parts
4730-01-105-0723INTERCHANGEABLE
GREASE FITTING,SPECIAL
12060
4720-01-148-2762INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
7838941

Frequently Asked Questions

What is NSN 5330-00-640-8557?

NSN 5330-00-640-8557 is a Ring,wiper, manufactured by Gayle George W and Son, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-00-640-8557?

NSN 5330-00-640-8557 has 11 cross-referenced part numbers: G-37 (Gayle George W and Son), MIL-S-5049 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS28776M2-37 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), FWR-3C-37 (Ace Products Co of Toledo Inc Dba Ace Products), GI 1171-37 (Gad-Jets Inc Dba Associated Technical Sales) and 6 more.

What NSN replaces 5330-00-640-8557?

There are 2 known substitutes for 5330-00-640-8557: 4730-01-105-0723, 4720-01-148-2762. Verify interchangeability with system specifications before substitution.

What are the specifications of G-37?

Key specifications for G-37: Cross-Sectional Shape Style: OUTSIDE GROOVED, STRAIGHT FACE; Ring Style: CONCENTRIC; Outside Diameter: 4.407 INCHES NOMINAL IN; Joint Style: DIAGONAL JOINT. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-00-640-8557 still in active supply?

NSN 5330-00-640-8557 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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