Captain O-Ring & Custom Rubber
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Captain O-Ring Product Manuals


Printable Master O-Ring Size Chart

Click here​ to go to our master o-ring size chart.  This chart can be printed and used to determine most standard size o-rings.  

Note:  This chart is a large file (32MB).  It may cause instability on mobile devices.  Be sure to print the o-ring size chart above and marker manuals below at "actual size" or "100% scale" and not "fit to page" or "shrink to page" in order to ensure that your document prints the o-ring sizes accurately.  There is a 1" long calibration line at the bottom of the first page that you can measure with a ruler to confirm the page printed at actual size.
Master Printable O-Ring Size Chart

Paintball Color O-Ring Manuals & Size Chart

Click here to go to our Paintball o-ring kits product manual page (Includes our color o-ring size chart).

Note:  Chart must be printed at "Actual Size"  or "100% scale" and not "fit to page" or "shrink to page" settings in order for printed o-ring sizing to be accurate.
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Scuba O-Ring Replacement Guide

Click here to go to our Scuba O-Ring Replacement Guide.

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Note:  Chart must be printed at "Actual Size"  or "100% scale" and not "fit to page" or "shrink to page" settings in order for printed o-ring sizing to be accurate.
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Firearms, Airguns & Hunting O-Ring Manuals

Click here to go to our Firearms, Airguns, and Hunting O-Ring Product Manuals
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Visa, Mastercard, American Express, Discover, and other cards accepted
Terms & Conditions
Shipping, Payment & Return Policies
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Captain O-Ring LLC is an ISO9001:2015 certified company.
​Captain O-Ring LLC
420 Hudson St
​Gloucester City, NJ 08030

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Copyright © 2023
  • Home
  • O-Rings
    • O-Rings & Custom O-Rings
    • Paintball O-Rings
    • Scuba O-Rings
  • Custom Parts
    • Custom Rubber Parts
    • Custom Plastic Parts
    • Custom Metal Parts
  • Kitting/Assembly
    • Kit Packaging & Labeling
  • Online Store
    • Firearm & Air Gun O-Rings
    • Food/Concession O-Rings
    • Hydraulic O-Ring Kits
    • O-Ring Pick Tools
    • Paintball
    • Scuba O-Rings
    • Water Filter & Plumbing O-Rings
    • All Other Products
  • Support/Manuals
  • Contact
  • About