Realth SG119N3 Black RTV Silicone Gasket Maker, 3 × 100 g

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Product guide

Realth SG119N3 Black RTV Silicone Gasket Maker, 3 × 100 g

Realth SG119N3 is a black RTV silicone gasket maker supplied as three 100 g units, aimed at automotive and mechanical sealing work. The listing claims oil resistance and use across a range of temperatures, while customer feedback is divided on durability and curing time.

At a glance

RTV silicone formula is presented for automotive, motorbike and mechanical equipment repair.
The listing claims greater oil resistance than conventional silicone and gives a temperature range of -60º C to 280º C.
The instructions say to clean the mating surface, apply sealant, and allow it to set. The listing states complete setting after 24H.

Price

£13.59Save 15%

Reference price: ~~£15.99~~

Price checked: 12 Nov 2026

View offer

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Pros and cons

Pros

Three 100 g units provide a stated total quantity of 300.0 gram.
The stated applications include oil pans, water pumps, valve covers and other mechanical assemblies.
Customer feedback describes the product as easy to apply, with some reporting no leaks during use.

Cons

Customer feedback is mixed on durability, including reports of tubes breaking.
Some customers report that curing takes much longer than expected.

Technical specifications

10 specifications

Identity
Brand	Realth
Model	SG119N3
Pack count	3

Materials and protection
Material listed	Silicone
Water resistance listed	Waterproof
Colour	Black
Item form	Liquid
Compatible materials	Glass, Metal, Plastic, Rubber

Claimed application
Recommended surfaces	Metal, Glass, Wood, Automotive, Mechanical Assemblies
Claimed temperature range	-60º C ~ 280º C

What to know before buying

Listing details to confirm

Listing information contains a quantity inconsistency: the title says three 100 g units and the pack count is 3, while a separate field lists 6 items. Confirm the selected listing's pack contents. The listed 24H setting time sits alongside customer feedback describing very slow curing, so allow for curing uncertainty and check suitability for the required job. Temperature and resistance statements are manufacturer claims, not independently verified specifications.

Who is it for?

A good fit for

Automotive or motorbike owners carrying out gasket and flange sealing work.
DIY users who need black RTV silicone for listed metal, glass, wood or mechanical assembly applications.

Less suited to

Buyers who need a guaranteed fast cure or certainty about tube durability.
Jobs that require independently verified temperature, oil-resistance or material-compatibility performance.

Realth SG119N3 Black RTV Silicone Gasket Maker, 3 × 100 g · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 1,545 ratings

5 stars73%73%
4 stars15%15%
3 stars7%7%
2 stars1%1%
1 star4%4%

Customer feedback highlights perceived good quality and ease of application, with reports of no leaks during use. Durability, value and drying time draw mixed reactions, including tube-breakage reports and concerns about slow curing. These experiences matter for repair planning: the claimed complete set time is 24H, but the feedback suggests allowing for uncertainty rather than relying on a quick turnaround.

Positive themes

Customers describe the sealant as good quality and easy to apply.
Some customers report no leaks during use.

Negative themes

Some customers report tube breakage.
Some customers say the sealant cures very slowly.

Mixed feedback

Opinions on durability and value are divided.

Frequently asked questions

How many units are listed?

The title describes three 100 g units, and the pack-count field says 3. Another listing field says 6 items, so confirm the selected pack contents before buying.

What temperature range does the listing claim?

The feature text claims a range of -60º C ~ 280º C. This is a listing claim rather than an independently verified performance result.

How long does it take to set?

The listing says it sets completely after 24H. Customer feedback also includes reports of very slow curing, so timing may not meet every job's needs.

What surfaces and uses are listed?

The listing names metal, glass, wood and mechanical assemblies, and describes automotive, motorbike and equipment repair applications. It also lists glass, metal, plastic and rubber as compatible materials.