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  1. #1
    Jr. Engineer JTWard's Avatar
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    Question Help !. . . Tough item to find ?

    I have a 1990 Chevrolet Silverado with a 305 V8 and I need the small, what looks like a 7mm O ring seal to the t of h engines oil dipstick ? Using my caliper it looks like a 7 mm O ring. Anyone know where I can find this seal ? can't find any on Rockauto or Ebay ?

  2. #2
    Jr. Mechanic
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    Go to the hardware or parts store and get one. It's just an o-ring.

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  4. #3

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    Quote Originally Posted by zipp View Post
    Go to the hardware or parts store and get one. It's just an o-ring.
    Exactly.... lowes and autozone sells and assorted O ring kit.
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    I would think a regular o-ring would break down with contact of the oil/gas. It would be the same as fuel injector o rings, they're not just auto zone o rings, but don't take my word for it.
    2004 Chevy Colorado
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  7. #5

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    O-rings are rubber. They do not break down with oil. Oil pan gasket? Rubber. Oil filter gasket? Rubber. Heck, a semi tire has over a gallon of oil in it, just to make it.

    A regular o-ring will be fine.
    I like all dogs I meet, and some people too.

  8. #6

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    Good Day!

    In my opinion you should really seek help of an automobile technition to get it fixed. If ebay and Rockauto are'nt helping, may be you should try other estores such as alibaba or advanceautoparts.com. They too have large collections of these O-rings and Yes! Gaurdrail is right, Its just the rubber man!

  9. #7

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    JT @JTWard, if you want my 2 cents worth, this is probably one of the times that the dealer is a good place to go (if, in deed, you can buy something that small from a dealer)
    Ray

    '09 Avalanche LTZ - Black
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  10. #8
    Jr. Engineer JTWard's Avatar
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    Quote Originally Posted by RayVoy View Post
    JT @JTWard, if you want my 2 cents worth, this is probably one of the times that the dealer is a good place to go (if, in deed, you can buy something that small from a dealer)


    Hi Ray, I tried the local chevy dealership, but being the ruck is 22 years old, they couldn't even look it up. So I went to Home Depot plumbing section, a got a #5 faucet O ring pretty damn close. So I think I got it. Cost $2.11 for 10 O rings.

    Thank you for al your help !

  11. #9

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    Quote Originally Posted by Guardrail View Post
    O-rings are rubber. They do not break down with oil. Oil pan gasket? Rubber. Oil filter gasket? Rubber. Heck, a semi tire has over a gallon of oil in it, just to make it.

    A regular o-ring will be fine.
    Yes, o-rings are rubber. But certain types of rubber for certain applications. If you put a regular rubber o-ring on a power steering line then you would have issues. First, they may not be able to hold their shape under the pressure. Second, the fluid will eat them. Same with o-rings for fuel injectors, use a standard bathroom o-ring and you are screwed. Most of the specialty o-rings are made of nitrile or viton. I worked with o-rings for years at my old job. there is material differences: Neoprene, urethane, silicon, fluorosilicone, just to name a few. everything reacts differently yo gas, oil, diesel fuel. So, a general statement that they are just rubber is terribly inaccurate

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  12. #10

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    If your really that concerned about the o-ring breaking down and can't find one... just buy a aftermarket replacement dipstick kit and it will have one. I don't think it would be all that expensive... and could get in at summit.

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