At Associated Fastening, we’ve manufactured and distributed standard and specialty fasteners for over three decades. This experience gives us the knowledge and skills needed to provide quality fastening parts and products to customers in a diverse set of industries. One of our core product offerings is O-rings. They are available in standard and custom variations.  

Overview of Rubber O-Rings

O-rings are circular gaskets used to form a fluid-tight seal between two mated surfaces in a fastened assembly. They are generally extruded, molded, or machined from elastomeric materials, such as rubbers, which allows them to be compressed between the surfaces without permanent deformation. This quality enables them to maintain their sealing performance characteristics from one cycle to the next. 

There are many rubber materials used in the manufacture of O-rings, each of which offers different properties that make them suitable for different sealing applications. Some of the most common include PTFE, EPDM, silicone, Viton, BUNA, and nitrile. 

Industrial Applications of Rubber O-Rings

O-rings find use in liquid and gas sealing applications across a wide range of industries, including, but not limited to, the following:

  • Aerospace
  • Agriculture
  • Automotive
  • Firearms
  • Medical
  • Original Equipment Manufacturing (OEM)
  • Transportation

Standard vs. Custom Rubber O-Rings

Standard rubber O-rings, available in many materials, finishes, and sizes, serve as a cost-effective sealing component for many typical liquid and gas handling systems. However, for highly specialized or critical sealing applications, custom O-rings are generally more appropriate. These components are manufactured to the exact specifications needed for the fluid handling equipment, ensuring the formation of a leakproof seal. 

Rubber O-Ring Capabilities at Associated Fastening

Whether you need standard or custom O-rings, the experts at Associated Fastening have got you covered. We can produce O-rings in a variety of materials, finishes, sizes, and quantities to various tolerances and standards for different sealing applications. See the table below for more information on our O-ring capabilities.

 

Rubber O-Ring Manufacturing Capabilities

Seals

Standard
Custom
Dash

Materials

PTFE
EPDM
Silicone
Viton
Buna
Nitrile

Finish

Various

Diameter

0.040-10.00”

Length

Varies

Tolerance

+/-.001- to +/-.010

Runs

100 – 1,0000,000+

Inspection

Quality Assurance
Shipping Manager
Go / No-Go Gauges

Ring Gauges
Plug Gauges
Optical Comparator

Testing

Durometer

Quality Assurance

ISO 9001:2008 Registered
QS 14000 Compliant
Lot Traceable (With Dated Imprint When Requested)

Statistical Process Control (SPC)
Optic Weight Checkers
100% Inspection Available
Quality Records

Documentation / Certifications

Certificate of Conformance (C of C)
Material Certifications
First Articles
PPAP

DFAR
USA Manufactured
SPC
RoHS

Secondary Operations

Assembly Bagging Services

Additional Services

Special Packaging
Warehousing

Shipping
Reverse Engineering

Production Volume

Prototypes to Production Manufacturing
1 to 1,000,000’s

Lead Time

Short Lead Times
Hot Rush Orders Available
Pre-Expedited Orders

On-Time Deliveries
Stock and Release
Drop Shipments

Additional Information

Industry Focus

OEM
Automotive
Transportation
Agriculture

Firearms Industry
Medical
Aerospace

Intended Applications

Sealing Solutions

Industry Standards

ASTM
MS
AN
AS
NAS
MIL
AMS

 

SAE
FDA
NSF

WRc
KTW
UL

File Formats Accepted

AutoCAD (DWG, DWZ)
Bit Mapped Graphics (BMP)
Catia (CATDrawing, CATPart)
Delcam (DGK, DMT)
Drawing Exchange Format (DXF)
Graphics Interchange Format (GIF)
Initial Graphics Exchange Specification (IGES, ANSI)
Inventor (IDW, IPT)

IronCAD (ICD, ICS)
Joint Photographic Experts Group (JPG, JPEG)
MasterCam (MDX, MC8, MC9, SET
Portable Document Format (PDF)
Pro-E or Pro/Engineer (DRW, PRT, XPR)
3D ACIS Model File
SolidWorks (SLDPRT, SLDDRW, SLDDRT)