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Author Topic: A/C Box Sealant  (Read 8040 times)

Offline ehjorten

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A/C Box Sealant
« on: March 20, 2012, 10:39:34 pm »
This has probably been covered before, but with my computer psu down, I'm surfing on here with my iTouch and searching is painful on this...so...what is the correct sealant to use between the two halves of the A/C Box and to seal around the openings for the evaporator pipes?

I'm fixing up my '77 box and have everything cleaned, painted and ready to assemble.
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-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline beastie_3

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Re: A/C Box Sealant
« Reply #1 on: March 20, 2012, 11:02:03 pm »
butyl
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Offline ehjorten

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Re: A/C Box Sealant
« Reply #2 on: March 21, 2012, 12:20:39 am »
So is it just like butyl rubber tape like for windshields?  Cut it into smaller strips?

EDIT: I got into work this morning and did a search...guess you can buy butyl rubber caulk at almost any hardware store.
« Last Edit: March 21, 2012, 09:01:04 am by ehjorten »
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-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Online bd

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Re: A/C Box Sealant
« Reply #3 on: March 21, 2012, 11:49:52 am »
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Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline HAULIN IT

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Re: A/C Box Sealant
« Reply #4 on: March 21, 2012, 09:56:56 pm »
A product called M-seal is somewhat like butyl tape, but has a foam core (instead of solid which makes it flatten much easier) works well. Any good autobody supply store or glass shop should be able to help you. It comes in several diameters...I would use the smallest, 4mm I believe it is. Lorne 
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Offline sonicbluezx3

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Re: A/C Box Sealant
« Reply #5 on: June 27, 2012, 07:17:37 pm »
I used regular black RTV... GOBS of it.
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1986 Chevy K10 w/ 1983 Cab, 1984 Bed, 1987 Doors and a 6.2 Diesel Swap w/ 700R4 Trans. Truck body completely re-done between 2010 and 2012.
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