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O-ring Information
03-10-2012, 06:02 AM (This post was last modified: 07-26-2013 01:52 PM by Boomer.)
Post: #1
O-ring Information
Credit for the compilation of this information goes to Jinx18 from the PbN MacDev family...great work manExclamation




Oring Materials

Buna - Also known as Buna-N, Buna-T, NBR, Nitrile. They are all made of the same material, Butadiene Nitrile. These are the typical orings that come on almost every paintball gun. They are the cheapest, the most common and come in black color. The Durometer hardness is A70. If you are unsure what material to buy this is the default material to go to.

Urethane - Orings of this material are traditionally higher quality than Buna. They come in many different durometers. They are usually a clearish color. Harder durometers like a A90 durometer urethane orings are often solid white instead of being clear colored.

Viton® fluoroelastomer - These are slightly harder and slightly more durable orings from the Buna. Durometer hardness is typically A75. They are usually black but can be a greyish or brownish color.

HNBR - Also known as High-Temperature Buna-N (Hydrogenated Nitrile Butadiene Rubber). These are the green orings you see. They are similar to Buna, except the material is hydrogenized (saturated with hydrogen to improve resistance to heat and ozone). They should hold up longer than urethane or buna, while maintaining the same durometer as the Buna rings.



Oring Shapes

Round - Typical orings you are used to seeing on paintball guns. Cross section is round in shape.

[Image: o-ring%201.jpg]

X ring- Also known as Quad ring, Quattro Seal, Double Seal. These are special o-rings made in an "x" cross section shape for a double sealing surface. The idea is that the quad ring won't be able to twist and bend when the part moves since they aren't circular. They also should allow for lighter seals since the surface of the quad-ring sealing against the part is smaller. This should allow for less pressure required to move the part though this may be extremely negligible in paintball gun.

There are only certain places you would want to install an x ring. You would want to replace any oring that has movement over it, either when the oring is stationary but something slides over it or when the oring is on something that slides. You also want to make sure that the x ring has constant contact with a surface. You do not want an x ring in an area that goes into and out of contact with something as the x shape of the ring can get caught and pulled off. When using quad rings you must experiment with them. They may leak or cause other issues. They may or may not work in all applications. You will need to try and see if your results are positive.

[Image: X-Ring.jpg]



Oring Sizes and Locations on Macdev Products

Macdev Clone VX Drivetrain

Bolt Keg Inner (017)
Bolt Keg Outer (020)
Bolt Tip (014) -
Bolt Bumper (15x1)
Bolt Switch (016)
Spacer Inner (017)
Spacer Outer (017)
Valve Front (17x1)
Valve Middle (17x1)
Valve Rear (15x1)
Valve Keg Outer (020)
Powertube Tip (011)
Powertube Mid (10x1)
Powertube Cap Inside (020)
Powertube Cap Outside (020)

[Image: ScreenShot2011-11-07at21519PM.png]



Macdev Drone DX Drivetrain

Keg Inner (017)
Keg Outer (020)
Bolt Tip (014)
Bolt Bumper (15x1)
Bolt Switch (016)
Valve (014)

[Image: dronedxdrivetrain.jpg]



Macdev Gladiator Inline Regulator

Swivel (016)
Adjuster (008)
Seat (6x1)
Retainer Inner (008)
Retainer Outer (011)
Swivel (016)
Bottomworks (016)
Piston (016)
Topworks (015)

[Image: gladiatorreg.jpg]


Credit for the Tactical Drone rings goes to Boomer...
Tactical Drone

Size Qty Location (s)
005 3 ASA retainer, ASA bar (2)
008 2 inline retainer inner, adjuster
011 1 power tube tip
013 1 Powertube mid
014 2 bolt tip, ASA retainer
015 4 regulator top, swivel, inline cap, bolt bumper
016 1 reg piston
017 2 Keg inner, inline retainer outer
018 2 power tube rear, bottom works
019 1 keg switch
020 4 Keg outer (3), end cap
4x1mm 4 sub plate (4)
2x1mm 2 solenoid
17x1mm 1 Bolt mid-oring



Macdev Clone Drivetrain

Bolt Keg Inner (017)
Bolt Keg Outer (020)
Bolt Tip (014)
Bolt Bumper (15x1)
Bolt Switch (016)
Spacer Inner (017
Spacer Outer (017)
Valve Front (17x1)
Valve Middle (17x1)
Valve Rear (15x1)
Valve Keg Outer (020)
Powertube Tip (011)
Powertube Mid (10x1)
Powertube Rear (10x1)
Powertube Cap (020)

[Image: clone2-1.jpg]



Macdev Droid Drivetrain

http://macdevog.com/BorgFocus/images/o-r...0chart.pdf

63 Keg Inner Oring
64 Drivetrain Outside Oring (x6)
65 Keg
66 Drivetrain Floating Oring (020)
67 Bump Stop
68 Bolt
69 Bolt Front Oring (014)
70 Bolt Switch oring (016)
71 Joiner Inner Oring
72 Joiner
73 Valve
74 Valve Oring (x3)
75 Valve Keg
76 Valve Keg Rear Oring
77 Powertube Oring (x2) Front 2 (011)
78 Powertube
79 Powertube Rear Oring (012)
80 Powertube Cap

[Image: droidbolt.jpg]



Macdev 2007 Cyborg

Bolt (x3) (013) - 70 Durometer Buna - 9452K57
Ram bumper/Hammer Bump Stop (007)
Rear Ram Oring/Hammer Switch (011)
Front Ram Oring/Hammer Front (110)
Ram/Valve Body EXCEPT the front o-ring of Ram Body (x6) (015)
Front o-ring of Ram Body (013)

[Image: cyborg1.jpg]

LPR Piston (x2) (012)

[Image: cyborg2.jpg]



Macdev RX Inline Regulator

Topworks (015)
Piston (016)
Retainer Inner (008)
Retainer Outer (017)
Seat Retainer (008)
Bottomworks (018)
Sleeve (x2) (016)
End Cap (013)
Adjuster Screw (008)

[Image: rxgladiator.jpg]
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04-16-2012, 01:50 PM
Post: #2
RE: O-ring Information
Here are the orings from the Clone GT. The drive and regulator sizes are taken from the manual, the others by disassembly and comparison. If I get to it, I will paste the manual diagram here with callouts to their locations. There are ALOT of orings in the subplate area, as expected with the air through.

Size location qty

drive assembly
017 keg inner (1)
020 bolt ket outer (4)
016 bolt switch (1)
15x1 bolt bumper (1)
017 spacer inner (1)
017 spacer outer (1)
017 valve orings (3)
020 valve keg outer (4)
011 power tube tip (1)
011 power tube mid (1)
020 power tube cap inner (1)
020 drive cap outer (1)

regulator
014 bottomworks (1)
008 adjuster (1)
6x1 reg seat (1)
012 retainer outer (1)
008 retainer inner (1)
012 piston (1)

frame and subplates
006 asa knob (1)
012 asa/frame (1)
2x1 solenoid (2)
4x1 solenoid (1)
4x1 subplate/frame (1)
2x1 subplate/body (1)
4x1 subplate/body (1)
17x1 subplate/body (1)
3x1 subplate-subplate (2)
4x1 front subplate (1)
8x1 front subplate (1)
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10-24-2012, 02:56 AM
Post: #3
RE: O-ring Information
Hi,

I live in French Guiana, south america, so it is more convenient for me to buy here than make an order.


Can you please explain to me the characteristics of some orings:

For examples:

the O-ring 17:
what is exact size? is that inches? what is the diameter of the "tore", what is the intern diameter of the O-ring?

The O-ring M17:
What does "M" means?what is the diameter of the "tore", what is the intern diameter of the O-ring?

The material is "Perbunan", is it like Buna-n? They don"t precise if it is Durometer 70.
So i can make my own O-ring kit here for my GT.

Thanks,

Fellouss

The ma
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12-16-2012, 10:48 PM
Post: #4
RE: O-ring Information
Wow great post.Really i think it is a admirable post. Thank's. Robin Rozario
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01-10-2013, 01:05 PM
Post: #5
RE: O-ring Information
Excellent post. Really I am surprised about this post. Thanks.

Plastic Surgery NJ
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01-12-2013, 04:11 PM
Post: #6
RE: O-ring Information
Wonderful post. I think it is very informative post.
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02-05-2013, 01:14 AM
Post: #7
RE: O-ring Information
Hello,
I wanted to follow up on the question from Fellouss

The sizes pointed out by Krazy8 and Boomer are US industry standard oring measurements. They are referred to as an O-ring's "dash" number. So when you see numbers like (011, 017, 020, 110) those are referring to AS568-011, AS568-017, AS568-020, AS568-110 sizes. I work for a rubber manufacture and would like to provide some help with some quick size cross reference information.

Our store site has an online o-ring chart which list all AS568 o-rings in metric, inch and fractional dimensions. You can view this page here: http://www.rubberstore.com/catalog/as568...-chart.php

Or if you prefer you can download our corporate PDF files on our manufacturing site's as568 o-ring page here: http://www.columbiaerd.com/as568_orings.php (the pdf files are on the bottom left side of the page)

Very good post, and I hope the information on sizes helps your users.
Don
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01-22-2014, 10:04 PM
Post: #8
RE: O-ring Information
PTFE o-ring is typically used in static applications. Generally PTFE o-rings are used in applications which require a chemically resistant and non-compressible material. PTFE o-ring are good resistant to most chemicals including acids, bases, oils, steams and other chemicals. It’s not a very good abrasive resistant material however the PTFE material is not easily compressed and therefore may not seal as easily as some of the other polymers.PTFE o-rings are not recommended for certain applications like low compression vacuum sealing flanges, high vacuum seals, and high temperature steam. It’s temperature ranges between 200°C to 260°C.

Advantages of PTFE O-Rings:

PTFE O-Rings provides ideal solutions for low-pressure sealing systems
Excellent chemical resistant
Temperature range between 200°C to 260°C.
Available in standard and custom size for all suitable applications.

Refer more info here: PTFE o-ring and PTFE Material Guide

Thanks
Sophia wright
PTFE Products
http://ismat.in/PTFE-Products.html
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