spartan_185
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Does anybody know a source or a part number? I know for certain that the O ring from a Hemtt wheel will not work.
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FMTV Wheel O rings
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gimpyrobb
dumpsterlandingfromorbit!
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Get a 3/8 o-ring, should work fine.
spartan_185
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Alright, Ill try it out and see. Ive got a few of these wheels and Im getting them ready to mount 1600 R20s on.
gimpyrobb
dumpsterlandingfromorbit!
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I work for a guy that uses these rims on trucks he sells. He said that was the size of the replacements he used.
spartan_185
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That's good to know. Ill be sure and stock up on em. Thanks for the info.
gimpyrobb
dumpsterlandingfromorbit!
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Unless they crack, we re-use them. It also helps to use the "murphy's" tire lube to put them together.
3cavtanker
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Part Number OR420A NSN 5331-01-389-6028 o-ring between wheel rim halves
ADVN CROSS-SECTIONAL HEIGHT 0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM ADYT CENTER HOLE DIAMETER 18.930 INCHES MINIMUM AND 19.020 INCHES MAXIMUM CQFM HARDNESS RATING 60.0 SHORE DUROMETER A NOMINAL MATT MATERIAL RUBBER MDCL MATERIAL DOCUMENT AND CLASSIFICATION ASTM D2000 3BA625A14B13C12F19Z1Z2Z3 ASSN STD SINGLE MATERIAL RESPONSE
ADVN CROSS-SECTIONAL HEIGHT 0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM ADYT CENTER HOLE DIAMETER 18.930 INCHES MINIMUM AND 19.020 INCHES MAXIMUM CQFM HARDNESS RATING 60.0 SHORE DUROMETER A NOMINAL MATT MATERIAL RUBBER MDCL MATERIAL DOCUMENT AND CLASSIFICATION ASTM D2000 3BA625A14B13C12F19Z1Z2Z3 ASSN STD SINGLE MATERIAL RESPONSE
wsucougarx
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Anyone find a source for these o-rings?
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I know it's a long shot but what type rubber are you recommending. Buna-n rubber, epdm rubber, neoprene, silicone, viton? Types from McMaster Carr.
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The orange military ones are silicone. McMaster also will make it for you to size. Look in the spreadsheet here in my signature for a part number.
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Okay great thanks and thank you for the parts sheet! I did look them up and I'm hoping to find a less expensive opinion. I do a bunch of work for a local plant and they have a joining iron/ o-ring kit. Looks like if I buy in bulk it will be under 5 bucks a piece. I'm probably going to get a roll and see what happens.
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I'm not personally familiar with the end-joining kits/machines, but one for rubber o-rings probably is not the same for silicone o-rings. Silicone is heat resistant, and bonds chemically, not like rubber which vulcanizes. So just check that the kind you have will work.
You can run a rubber o ring over a silicone as the military did it to counter act leaks forming on tires when the temps drop below freezing. Luckily not a big south Carolina issue
At current the lead time on the or420a from haltec Is 8 weeks due to a large order by our government being filled
At current the lead time on the or420a from haltec Is 8 weeks due to a large order by our government being filled
