Is it better to use a gasket or RTV?

It is fine to use the correct RTV sealant instead of a gasket if used in the right application (oil, high temp, fuel). Not, however, if the gasket thickness is required to produce a specific amount of clearance. RTV sealant is better than primitive gaskets in most applications ie.

Should I use gasket sealer with a gasket?

Automotive applications commonly use gasket sealant alongside solid gaskets, as they are repairing older parts. Gasket sealant can be used to make cheaper gasket materials more robust, increasing adhesion and chemical/water resistance.

Is RTV the same as gasket sealer?

Most "sealers" and "gasket makers" are RTV Silicone, same thing. Surfaces need to be clean and dry, apply sealer to mating surfaces / gasket sides ( I coat them all ) and wait a few minutes, install parts, tighten bolts in sequence, wait a few more minutes, re-tighten bolts to spec ..

Can I use RTV instead of a gasket on oil pan?

Well it can be done, but that doesn't mean it should be done. If done properly, a good bead of RTV will seal the oil pan, but personally I've always used both. You could very well have this last you years, but if he didn't do a good job you could have a leak in days, weeks or months. Make sure you keep your receipt.

Can you use silicone sealant as a gasket?

Gasket maker or silicone sealant should never be used as a glue or means of keeping a gasket in position when you reassemble your engine. Mechanics often do this believing, erroneously, that a gasket maker will not only hold the gasket in place, but it will add to the seal.

Why you should never use RTV silicone on gaskets

What can I use instead of a gasket sealer?

Even normal bathroom silicone sealant is temperature resistant to about 250 degrees C. If the gap is too big between the pipe and slip-on can, try packing it with kitchen foil as well.

Is gasket maker better than a gasket?

Gasket makers are the wrong product for these applications – their formulations are too thick for use as a dressing. If you're installing a conventional gasket, use a gasket sealant – they're available in sprays, liquids, and tubes, with specialized formulas for a variety of applications.

What does RTV not stick to?

Mold Release

Generally, silicone RTV mold making rubber does not stick to anything, and nothing will stick to it. The exception is that it will stick to itself, other silicones, silica, and glass.

What is the difference between black and gray RTV?

Black RTV can flex, allowing it to retain its bonds between two different material types that will heat and cool at different speeds. Grey RTV has higher density when cured for higher vibration resistance and tight tolerance applications. Red RTV is for exhaust and high heat applications.

Should I use gasket sealer with a paper gasket?

Shellac Gasket Sealer

Also known as Indian head shellac, this sealant is best used for thin paper gaskets or cardboards. It is good for low temperatures between 300 and 350 degrees Fahrenheit and low-pressure usage.

Should you grease gaskets?

I use grease. Makes them slightly 'softer' to bed down and easier to dis-assemble years later. It also keeps them in place while fitting the mating piece. This is the correct and time honoured way to assemble with paper gaskets and head gaskets.

How long does RTV sealant last?

RTV Silicones have a 40-year life span and a high degree of elongation; they are easy to dispense, even in cold temperatures, and are VOC compliant, with excellent UV and thermal stability properties.

Is RTV a gasket?

RTV Silicone Gasket is a singular component vulcanizing gasketing compound designed to provide reliable gaskets for mechanical assemblies. The product cures upon exposure to room temperature air and will form a tough yet flexible silicone rubber gasket.

What is black RTV used for?

General-purpose, black RTV indoor/outdoor sealant. Seals, bonds, repairs, mends and secures glass, metal, plastics, fabric, vinyl, weather stripping and vinyl tops. Protects and repairs electrical wiring. May be applied to horizontal or vertical surfaces.

Can I use silicone instead of RTV?

Performance Of 100% RTV vs.

100% silicone will perform better than “extended”. Pure silicone will have stronger adhesion, less shrinkage lower temperature application, and stronger resistance to weathering. If you are using your silicone in an oven or on a rooftop in Florida, 100% RTV will handle the heat much better.

What is RTV silicone good for?

RTV silicones' industrial applications include aviation, aerospace, consumer electronics, and microelectronics. Some aviation and aerospace product applications are cockpit instruments, engine electronics potting, and engine gasketing. RTV silicones are used for their ability to withstand mechanical and thermal stress.

Does RTV need air to cure?

A: RTV silicone adhesives rely on moisture and humidity in the air to cure properly. Generally, the conditions have to be 40-60% RH, but can extend down to 20%, and up to 70% in certain cases. The moisture in the air reacts with the stabilizer in the RTV, and once the stabilizer is removed, the adhesive can cure fully.

What can I use for gasket material?

What is blue RTV used for?

RTV Silicone Blue is a low volatile high-temperature gasket maker that can be used on metal, glass, ceramics, wood, rubber and most plastics. As an instant gasket maker, it replaces a wide range of cork, paper, asbestos, felt and metal gaskets.

Can you put two gaskets together?

We do not recommend stacking numerous gaskets in the same flange. In-house tests have shown that a better way to fill a 1/2" gap, for example, is to install a 1/16" gasket on each side of a 3/8" thick incompressible spacer ring.

Is Vaseline good for rubber seals?

This would include Vaseline. While Vaseline and other petroleum products may degrade real rubber (actually made from the rubber tree), current o-rings technology does not use natural rubber.

Should rubber gaskets be lubricated?

Look to any manual or set of directions, and it is highly recommended to lubricate most seals before installing or changing them properly. Proper lubricants help protect O-rings from damage due to abrasion, pinching, or cutting, all of which could lead to premature product failure.