Akfix 100E RTV Translucent Silicone Caulk - 100% Waterproof Sealant

In this review of the Akfix 100E RTV Translucent Silicone Caulk, the bottom line is simple: this is a reliable, general-purpose silicone sealant for homeowners and DIYers who need a permanently flexible, waterproof joint sealer in wet areas. The reviewer found it especially useful for kitchen and bathroom jobs where long-term elasticity and strong adhesion matter, and appreciated that it cures as a 100% silicone product suitable for common non-porous surfaces. It is a practical choice when longevity and water resistance are the top priorities.

Key Features

• Universal silicone: Works as an all-purpose RTV gap filler for typical bathroom and kitchen sealing tasks, making it a versatile household product.
• Permanently elastic: Remains flexible after curing so joints tolerate movement without cracking, which is important around showers and tubs.
• Easy DIY application: Applies smoothly for sealing gaps around windows, door frames, baseboards and fixtures, suitable for casual DIYers.
• Strong adhesion: Bonds well to common non-porous building materials and resists aging and discoloring in normal indoor use.
• Many applicable surfaces: Suitable for use on door and window frames, glass, porcelain and steel, broadening the range of repair and installation tasks.

Who It's For

The Akfix 100E is aimed at homeowners, renters and DIY enthusiasts who need a waterproof, flexible silicone sealant for routine bathroom and kitchen maintenance, such as sealing around bathtubs, showers, sinks and window frames. It is practical for small renovation tasks, routine caulking and projects where a translucent finish is preferred.

Those who need a neutral-cure product for mirrors or sensitive metals should look elsewhere, since this product cures with an acidic system and is not recommended for copper, brass, lead or mirror backing. Professionals requiring speciality adhesives or ultra-low-odor neutral systems may prefer a different formulation.

Pros & Cons

Pros

• 100% silicone formulation gives strong waterproofing and lasting elasticity.
• Good adhesion to common non-porous materials for reliable joints in wet areas.
• Easy for DIY application and useful across a range of household sealing needs.
• Resists ageing and discoloring in normal indoor conditions.

Cons

• Acetoxy (acidic) curing means it must not be used on mirrors or sensitive metals like copper or brass.
• Some users report the product can be thin and a bit messy to apply, so careful tooling and masking are recommended.

Specifications

Brand	Akfix
Product	100E RTV Translucent Silicone Caulk
Formulation	100% silicone, acetoxy cure
Packing	24 tubes of 10.1 fl.oz. each (translucent)
Temperature Range	Suitable for typical household temperatures and thermal movement
Primary Uses	Kitchen, bathroom, shower, bathtub, sink, window and door sealing

Our Verdict

Akfix 100E is a sensible, cost-effective choice for anyone needing a waterproof, permanently elastic silicone sealant for household bathroom and kitchen work. It delivers the core benefits expected from a 100% silicone caulk - durability, adhesion and flexibility - though users should avoid mirror and sensitive metal applications and be prepared for a slightly thin, messy application that benefits from careful tooling.

Frequently Asked Questions

Can this be used on mirrors?
No. Because the product has an acidic curing system it must not be used on mirrors or mirror backing.

Is the cured sealant waterproof?
Yes. Once cured the 100% silicone formulation provides waterproof sealing suitable for showers, tubs and sinks.

Will it discolor over time?
The formulation is designed to resist ageing and discoloring under normal indoor conditions, making it suitable for visible joints in kitchens and bathrooms.