O-rings are designed to contain thousands of pounds of pressure by creating a seal between two or more parts. O-ring measurements are defined by the inside diameter and the thickness. There are many causes for O-Ring failure, such as pressure, friction, temperature or chemicals. The most common are: • <u>Extrusion and Nibbling</u> • O-ring has ragged, tattered edges. These are commonly caused by pressure spikes which shear off tiny "bites" from the o-ring, or caused by clearance gaps. • <u>Abrasion</u> • One or both sides of the o-ring appear rough and slightly flattened. Commonly caused by a contact surface that is too rough, contains grit or is too smooth to allow lubrication. • <u>Over Compression </u> • O-ring is flattened on both sides and may have a "ring" split along its length. Commonly caused by excessive pressure or heat. • <u>Heat Hardening</u> • O-ring has a pitted or cracked surface, and often is flattened on both sides. Caused by temperature exceeding o-ring capacity. • <u>Weather/Ozone Cracking</u> • O-ring is covered in small surface cracks. Caused by exposure to ozone, UV rays and air pollution. Excessive seal stretching causes similar cracking.
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★★★★★
★★★★★
Just what I needed to repair my brad nailer! Fast shipping time
Just what I needed - fast shipping
Guest - September 20, 2019
Verified Purchase
★★★★★
★★★★★
O-Rings for my Brad Nailer
parts were reasonably priced, quick delivery and best of all, my Porter Cable Brad Nailer no longer leaks air!! Thank you for having the right parts, right price.
Guest - October 2, 2019
Verified Purchase
★★★★★
★★★★★
The tools is working properly now.
The parts were correct and the YouTube video I found by another man fixing his Porter Cable BN125A did the trick. Thanks.
Guest - March 11, 2020
Verified Purchase
★★★★★
★★★★★
Easy repir
in good condition fit perfectly for the tool
Guest - April 23, 2020
Verified Purchase
★★★★★
★★★★★
it fit
arrived promptly.
Guest - June 28, 2021
Verified Purchase
★★★★★
★★★★★
Part Research and Providing Item
The quick response was outstanding and great ability to find the needed part.
Charles - November 13, 2021
Verified Purchase
★★★★★
★★★★★
Sloppy fit.
Seems to move around in the groove and not protrude above the surface as much as the old one, so I did not use it.
Guest - July 18, 2019
Verified Purchase
July 18, 2019
Hi Keith,
Thank you for your review. Please accept our apologies that the part you received is not fitting correctly. We have contacted you privately regarding this situation.
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Removed 4 allen screws from top cover plate. Replaced neoprene \"o\" ring in cap. Easiest
thing I\'ve ever done. Works great now. I ordered other parts I did not need. If your gun leaks from top, take off the cap and inspect \"O\" ring. If it is split, just replace it.
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Porter Cable BN200A Air Nailer, would not fire - massive internal air leak
Removal of the cap (4 internal hex cap screws) revealed a broken O-ring. There was a gasket under the cap. I ordered the most likely parts to wear or leak. No other tools were required to disassemble enough to replace the piston seal, and another O-ring in the cap. I lubricated the O-rings and piston seal with Vaseline. After reassembly,
... Read morethe nailer performed like new.
Big endorsement for ereplacementparts.com. They had the parts to keep this tool in operation.
Once I ordered correct part, the repair was straight forward. Took top off and there was broken O-ring, replaced. Reassembled and tried out. Works great. Hardest part was determining the correct o-ring to order.
Removed Allen screws...need good hardened steel wrenches...removed and replaced o rings and seal...did not replace piston o-ring. Greased and reassembled. (Used white lithium grease). Tightened well... ..still leaked a tad.....fired one nail and leak stopped. Guess the o- rings needed to seal.
1. Removed housing cap
2. Then pull off seal/ o ring and replace with new one and attached to housing
3. Installed gasket and put housing back on
4. Note used a little flat head screw to remove o ring.
5. Test letGÇÖs it and all good to go. No air leaks
1. Removed top.
2. Removed broken o ring.
3. Installed new o ring.
4. Replaced top.
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This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
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