


COMP Cams Valve Seal 3/8in PTFE
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
COMP Cams Valve Seal 3/8in PTFEFits: 3 8" Valve Stems . 530" Guides (. 630" Seal Diameter)Valves Seals keep unwanted oil from entering the combustion chamber through clearance in the valve guidesSmaller diameter than COMP Umbrella Seals to allow use with double springs Catalog User 1 This Part Fits: Year Make Model Submodel 1980 Buick Electra Estate Wagon 1980 Buick Electra Limited 1980 Buick Electra Park Avenue 1980 Buick Estate Wagon Base 1980 Buick LeSabre Base 1980 Buick
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Product Reviews
★★★★★ 5
Sturdy, worked well
Holds it sturdy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 21, 2025
★★★★★ 5
Solid as described
Value for money and easy installation
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Reviewed in the United States on October 4, 2025
★★★★★ 5
Great for a gaming laptop!
Color: Black, Size: 1.37" without hook
Great product is you want to mount any size laptop under your desk. I used it for my Alienware gaming laptop and it's fantastic! The three points of contact hold the laptop securely, while allowing maximum airflow for the fans. The three "clamps" are rock solid and will definitely outlive the laptop. The installation was simple and easy, just need a drill.
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Reviewed in the United States on March 15, 2026
★★★★★ 5
under desk laptop system
Color: Black, Size: 1.37" without hook
Reclaimed real desk space with this one. The mount holds the laptop securely underneath without any vibration or creaking and the installation required no drilling — clamped cleanly to the desk edge. The ventilation spacing is generous enough that thermals stay reasonable even under load. Works with a solid range of laptop sizes and the adjustment mechanism is easy to use. If your laptop spends most of its time docked this is the cleanest way to get it out of the way.
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Reviewed in the United States on March 25, 2026
★★★★★ 4
Works great, but pads are peeling.
Color: Black, Size: 1.37" without hook
Works for what I needed, which was to mount my work laptop to the side of my desk. However, the rubber pads started peeling the first day. I tried clamping them down overnight, but they still ended up peeling up. They haven't come off completely and are still working, though. I may have to glue them down.
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Reviewed in the United States on April 14, 2026