Permatex
Ultimate HDF Member
Joined: Nov 2016
Posts: 6,697
Likes: 774
From: Stuart, Fl
No way they use there specialty gaskets and will charge you out the *** for them when you need one. Permatex has its own special use never had much success using it to make or replace a gasket its a great sealer for different projects.
It's not black silicone it is between the two inner plate covers above the front drive pulley directly to the rear of the cylinder head. It appears to be hard like Permatex and not grease.
Permatex?
HDF Community Team
Joined: Jun 2006
Posts: 12,763
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From: san antonio
Apologies for the troll reference but the question was a curious one.
Last edited by djl; Apr 8, 2019 at 01:04 PM.
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Road Captain
Joined: Jun 2013
Posts: 671
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From: Ontario, Canada
Permatex is a brand name, not a sealer. They make dozens, maybe hundreds, of products.
There is a sealer used between the case halves and probably in other areas of the engine as well. It's probably a type of RTV but I'd need to actually check the manual for a spec to say for sure.
Between 2 machined surfaces, like your cases, it's actually a better and more precise way to seal it than using a gasket.
There is a sealer used between the case halves and probably in other areas of the engine as well. It's probably a type of RTV but I'd need to actually check the manual for a spec to say for sure.
Between 2 machined surfaces, like your cases, it's actually a better and more precise way to seal it than using a gasket.
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HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
The sealant HD uses is not an RTV sealant but is a sealant like Yamabond or Threebond; it might even be one of those.
RTV sealant will take a hard set (exposed to oxygen) in less than 20 minutes but Yamabond/Threebond will take about 40 minutes to take a hard set. Applying sealant to prep cases for assembly is a tedious process; takes time to lay down a continuous bead, work around the case holes, avoiding letting sealant land in undesirable places, etc. 40 minutes allows the time to apply the sealant correctly and correct any errors without getting in a rush.
RTV sealant will take a hard set (exposed to oxygen) in less than 20 minutes but Yamabond/Threebond will take about 40 minutes to take a hard set. Applying sealant to prep cases for assembly is a tedious process; takes time to lay down a continuous bead, work around the case holes, avoiding letting sealant land in undesirable places, etc. 40 minutes allows the time to apply the sealant correctly and correct any errors without getting in a rush.
Road Captain
Joined: Jun 2013
Posts: 671
Likes: 168
From: Ontario, Canada
The sealant HD uses is not an RTV sealant but is a sealant like Yamabond or Threebond; it might even be one of those. RTV sealant will take a hard set (exposed to oxygen) in less than 20 minutes but Yamabond/Threebond will take about 40 minutes to take a hard set. Applying sealant to prep cases for assembly is a tedious process; takes time to lay down a continuous bead, work around the case holes, avoiding letting sealant land in undesirable places, etc. 40 minutes allows the time to apply the sealant correctly and correct any errors without getting in a rush.
RTV sealant will take a hard set (exposed to oxygen) in less than 20 minutes but Yamabond/Threebond will take about 40 minutes to take a hard set. Applying sealant to prep cases for assembly is a tedious process; takes time to lay down a continuous bead, work around the case holes, avoiding letting sealant land in undesirable places, etc. 40 minutes allows the time to apply the sealant correctly and correct any errors without getting in a rush.High-performance, room temperature vulcanized (RTV) silicone type liquid gasket is a low-odor, non-corrosive and non-conductive sensor-safe formula.
- Sealant allows high elongation when cured to absorb thermal and dynamic movement of the mating surfaces
- Resistant to most chemicals and solvents
- Temperature Range: 76°F to 482°F (-60°C to 250°C)
- Approved for use as crankcase sealant on all Harley-DavidsonŽ powertrains
- Gray
- 1.9 oz (54 g) tube
Last edited by LazySundays; Apr 8, 2019 at 03:34 PM.