PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12SGDampener,fluid Pressure

Chemiquip Products Co Inc · NSN 6685-00-807-9966 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-807-9966 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-807-9966. Primary manufacturer part number: 12SG.
Features
  • Dampener,fluid Pressure — FSC 6685
  • Removable Piston: NOT PROVIDED
  • Material: STEEL CORROSION RESISTING
  • Screw Thread Series Designator: NPT
  • FSC Application Data: 1. AIR LINES GROUP,AIR COMPRESSOR
  • Gage End Connection Type: FEMALE
  • Thread Location: INTERNAL AND EXTERNAL
  • Nominal Pipe Size Designation: 0.125 INCHES IN
Applications
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Dampener,fluid Pressure, cataloged under National Stock Number 6685-00-807-9966, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Chemiquip Products Co Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 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
NSN6685-00-807-9966
Primary Part Number12SG
Item NameDampener,fluid Pressure
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerChemiquip Products Co Inc
StatusCANCELLED
Removable PistonNOT PROVIDED
MaterialSTEEL CORROSION RESISTING
Screw Thread Series DesignatorNPT
FSC Application Data1. AIR LINES GROUP,AIR COMPRESSOR
Gage End Connection TypeFEMALE
Thread LocationINTERNAL AND EXTERNAL
Nominal Pipe Size Designation0.125 INCHES IN
Thread Size1/8-27
Threaded Direct Pressure ConnectionPROVIDED
Connection Quantity2
Fluid Type for Which DesignedAIR
Tube Connection TypeFLARELESS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5340-00-050-1589 INTERCHANGEABLE
Plug,expansion
6210-00-056-06435-BS0 INTERCHANGEABLE
Fixture,lighting
Harvey Hubbell Inc
4810-00-062-2660 INTERCHANGEABLE
Valve,solenoid
5961-00-159-729812S INTERCHANGEABLE
Transistor
Lucent Technologies Inc Corporate Headquarters
4030-00-195-2561 INTERCHANGEABLE
Hook,chain,s
8135-00-239-53088135-00-239-5308 INTERCHANGEABLE
Seal,strapping
Independent Metal Strap Co Inc
5930-00-259-33419S4719LALT16TYPES2D INTERCHANGEABLE
Switch,rotary
Naval Ship Systems Command
4730-00-278-3905 INTERCHANGEABLE
Bushing,pipe
5930-00-315-2575 INTERCHANGEABLE
Contact,switch
7045-00-702-276129-19224-00 INTERCHANGEABLE
Tape,skew,master
Compaq Federal Llc
Cross-Reference Index
Part NumberManufacturer
P28784 Davey Compressor Co Div of Keco Industries Inc (USA)
28784 Davey Compressor Co Div of Keco Industries Inc (USA)
AP28784 Davey Compressor Co Div of Keco Industries Inc (USA)
12S Chemiquip Products Co Inc (USA)
12SG PRIMARY Chemiquip Products Co Inc (USA)
S2D Chemiquip Products Co Inc (USA)
Related Parts
5340-00-050-1589INTERCHANGEABLE
PLUG,EXPANSION
6210-00-056-0643INTERCHANGEABLE
FIXTURE,LIGHTING
5-BS0
4810-00-062-2660INTERCHANGEABLE
VALVE,SOLENOID
5961-00-159-7298INTERCHANGEABLE
TRANSISTOR
12S
4030-00-195-2561INTERCHANGEABLE
HOOK,CHAIN,S
8135-00-239-5308INTERCHANGEABLE
SEAL,STRAPPING
8135-00-239-5308
5930-00-259-3341INTERCHANGEABLE
SWITCH,ROTARY
9S4719LALT16TYPES2D
4730-00-278-3905INTERCHANGEABLE
BUSHING,PIPE
5930-00-315-2575INTERCHANGEABLE
CONTACT,SWITCH
7045-00-702-2761INTERCHANGEABLE
TAPE,SKEW,MASTER
29-19224-00
5905-00-776-9293INTERCHANGEABLE
HOLDER,RESISTOR
12S
5120-00-889-1788INTERCHANGEABLE
WRENCH,RATCHET

Frequently Asked Questions

What is NSN 6685-00-807-9966?

NSN 6685-00-807-9966 is a Dampener,fluid Pressure, manufactured by Chemiquip Products Co Inc, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-807-9966?

NSN 6685-00-807-9966 has 6 cross-referenced part numbers: P28784 (Davey Compressor Co Div of Keco Industries Inc), 28784 (Davey Compressor Co Div of Keco Industries Inc), AP28784 (Davey Compressor Co Div of Keco Industries Inc), 12S (Chemiquip Products Co Inc), 12SG (Chemiquip Products Co Inc) and 1 more.

What NSN replaces 6685-00-807-9966?

There are 12 known substitutes for 6685-00-807-9966: 5340-00-050-1589, 6210-00-056-0643, 4810-00-062-2660 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12SG?

Key specifications for 12SG: Removable Piston: NOT PROVIDED; Material: STEEL CORROSION RESISTING; Screw Thread Series Designator: NPT; FSC Application Data: 1. AIR LINES GROUP,AIR COMPRESSOR. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-807-9966 still in active supply?

NSN 6685-00-807-9966 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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