OMC Adhesive M Sealant?

luckyinkentucky

Chief Petty Officer
Joined
Jul 29, 2007
Messages
462
My local dealer ran out of OMC Adhesive M Sealant, and it will be a week before he gets more in. He couldn't offer me any suggestions, but I need to replace my water pump, and it asks for Adhesive M Sealant. I have some 3M Marine Grade Silicone Sealant. Will this work, or am I needing something different? I believe it's just to seat the O-rings in the pump housing.
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: OMC Adhesive M Sealant?

Any reliable automotive parts store, or even Wal*Mart, K-Mart, etc would have "Boat Armor Sealer 1000" which is the same substance. THere's some other brand names which is the same substance buit the names escape me. Perhaps someone else will jump in here with those names.
 

samo_ott

Vice Admiral
Joined
Jun 18, 2006
Messages
5,125
Re: OMC Adhesive M Sealant?

Where exactly do you use the sealant on the water pump?
 

reload

Petty Officer 1st Class
Joined
Jun 29, 2004
Messages
368
Re: OMC Adhesive M Sealant?

There is also something called Super Blue (I think). I used it in the past.
 

RobsTV

Seaman
Joined
Apr 1, 2006
Messages
67
Re: OMC Adhesive M Sealant?

What everyday automotive type sealers should you NOT use.
 

seahorse5

Rear Admiral
Joined
Jan 24, 2002
Messages
4,698
Re: OMC Adhesive M Sealant?

My local dealer ran out of OMC Adhesive M Sealant... or am I needing something different? I believe it's just to seat the O-rings in the pump housing.

Check with an auto supply house that distributes 3M products. It is called 3M type 847 adhesive/sealer.
 

mikesea

Lieutenant Commander
Joined
Oct 1, 2006
Messages
1,830
Re: OMC Adhesive M Sealant?

yes its just to set the oring so it wont come dislodged when sliding over impeller,personally .i ve used grease 4 yrs,once you get the oring in place kinda pack it in w/grease.be sure to turn the drive shaft while sliding the housing over the impeller,I like the grease because it makes for an easier cleaner job next yr,or use anything that wont hurt the oring
 

BoatBuoy

Rear Admiral
Joined
May 29, 2004
Messages
4,856
Re: OMC Adhesive M Sealant?

OMC Type M doesn't exist anymore, since OMC doesn't exist. It has been replaced by BRP Adhesive (3M Scotch-Grip Rubber & Gasket Adhesive #847) P/N 776964. I have looked all over town and couldn't find it except at Grainger. They had to order it and had it next day. I also noticed you can order from McMaster-Carr and get it next day. You can order it online from ishopmarine.com but it'll cost twice as much as from Grainger or McMaster.
 
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