11-87 O-ring size.

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11-87 O-ring size.

Postby waterfowler9 » Sun Sep 15, 2013 10:03 am

does anyone know what size the O ring is in the 11-87. Is it a standard size i can pick up at any hardware store? how does everyone prolong the life. My buddy seems to have to replace his every year or so.
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Re: 11-87 O-ring size.

Postby THAXTER » Sun Sep 15, 2013 11:36 am

Re: 11-87 o-ring
Postby MarkM ยป Wed Jul 31, 2013 9:06 am

z51 wrote:
The proper o-rings are made of Viton. IIRC it is a # 21 but check me on that.



This, Viton-021.

http://www.amazon.com/021-Viton-O-Ring- ... B0051Y1U7W



this is the advice given to me. it worked out so far.
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Re: 11-87 O-ring size.

Postby talltimber » Sun Sep 15, 2013 4:41 pm

Get the Viton, much tougher than regular rubber o-rings.
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Re: 11-87 O-ring size.

Postby BBK » Mon Sep 23, 2013 8:43 pm

No clue, but once a year is not right unless he is shooting 5-6 cases of shells a year. I put about a case a year through mine and one hasnt had the o-ring replaced since the late 90's. Other was bought new in 2011 so it has 2 years so far and is going strong. My fathers 1969 1100 20 gauge has the same o-ring since the early 90's.

Make sure you keep them lubed and if you have to remove it be sure to dose it with oil so it just slips right off.
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Re: 11-87 O-ring size.

Postby talltimber » Tue Sep 24, 2013 4:34 am

I've got a ~'05 1187 and I've replaced mine once. Tore it taking it off. I've not had too much trouble out of them either.
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Re: 11-87 O-ring size.

Postby z51 » Wed Sep 25, 2013 5:49 am

If you have one break in the field and you don't have a spare you are screwed. A viton o-ring is 70 cents at my local hardware.
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Re: 11-87 O-ring size.

Postby clampdaddy » Wed Sep 25, 2013 8:03 am

A buddy of mine swears by using Caterpillar o rings in his 11-87, but I don't remember if he used the pink or the burgundy colored ones.
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Re: 11-87 O-ring size.

Postby Force Fetch » Wed Sep 25, 2013 10:49 am

go with the first posters advice viton #21, same as the 1100.
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Re: 11-87 O-ring size.

Postby Jon Bergren » Wed Sep 25, 2013 4:08 pm

I use High Temperature O rings that measure 1" ID by 1 1/8" OD. I pay about $1.50 a dozen and put it a new one every year when I was shooting alot of shells thru them. Ned S
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Re: 11-87 O-ring size.

Postby Thax » Thu Sep 26, 2013 8:01 am

Plain rubber ones from the Hardware store. 1-1/16x15/16x1/16 part #33. Cheap and love you long time.
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Re: 11-87 O-ring size.

Postby THAXTER » Thu Sep 26, 2013 4:35 pm

Thax, is that your real name? Just curious. I've never ran into another person with that name before.
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Re: 11-87 O-ring size.

Postby Thax » Fri Sep 27, 2013 9:41 am

Just a nickname the kids gave to our dog. No idea how they came up with it.
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Re: 11-87 O-ring size.

Postby Gen. Lee » Fri Sep 27, 2013 12:06 pm

I got my 11-87 in Sept. 1988. It still has the original O ring despite having fired thousands--several thousands at that--of rounds through it. All the 11-87 O rings that I have seen or heard of breaking were ones that were taken off the mag. tube for cleaning. When people do that they abrade, nick, stretch, and eventually tear the ring. Just slide it up or down the tube when cleaning carbon off the tube and keep it reasonably free of solvents or lubricants and it will last for decades.

Never a bad idea to have a spare on hand and the #21 rubber Viton is the one to have.
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Re: 11-87 O-ring size.

Postby eastcoastsoxfan » Sun Sep 29, 2013 3:20 pm

waterfowler9 wrote:does anyone know what size the O ring is in the 11-87. Is it a standard size i can pick up at any hardware store? how does everyone prolong the life. My buddy seems to have to replace his every year or so.


Tell him to rub his fingers over the gas ports if they feel rough, smooth the roughness with some fine grit sand paper. I had an 1187 barrel that chewed up o-rings and the sand paper solved the problem.
"The old school hunters shoot what they shoot and kill as many as they always have, the newbies have their 3.5."
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Re: 11-87 O-ring size.

Postby waterfowler9 » Sun Sep 29, 2013 4:19 pm

eastcoastsoxfan wrote:
waterfowler9 wrote:does anyone know what size the O ring is in the 11-87. Is it a standard size i can pick up at any hardware store? how does everyone prolong the life. My buddy seems to have to replace his every year or so.


Tell him to rub his fingers over the gas ports if they feel rough, smooth the roughness with some fine grit sand paper. I had an 1187 barrel that chewed up o-rings and the sand paper solved the problem.


Great tip, will inform him about that.
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Re: 11-87 O-ring size.

Postby Theduckguru » Sat Nov 16, 2013 7:36 pm

Thax wrote:Plain rubber ones from the Hardware store. 1-1/16x15/16x1/16 part #33. Cheap and love you long time.


Agreed, I put a new one on each season.
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Re: 11-87 O-ring size.

Postby msuhunter » Sun Dec 22, 2013 3:09 pm

You can buy them on Ebay the Viton's pretty cheap. I keep a spare along with a bolt handle inside the stock. Can save the day on hunt.posting.php?mode=reply&f=100&t=286089&sid=1293aa68e89f15e997638875589cd24a#
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