Chengdu Guibao Science & Technology Co., Ltd.,

Class 25 Neutral Silicone Sealant

Product Details:
Place of Origin: CHINA
Brand Name: GUIBAO
Certification: ISO, SIRIM
Model Number: 996
Payment & Shipping Terms:
Minimum Order Quantity: 2000 pcs
Price: Negotiable
Packaging Details: Cartridges (net 300ml),24 pieces to a carton, and sausages (net 500ml),20 pieces to a carton.
Delivery Time: 4 working days
Payment Terms: T/T
Supply Ability: 20000 pcs/4 working days
  • Detail Information
  • Product Description

Detail Information

Material: 100% Silicone Type: One Component
Color: White,black,grey Shelf Life: 12 Months
Application: Weather And Waterproofing Seal Of High-end Window & Door, And Simple Curtain Wall Appearance: Smooth Paste Without Bubble Or Particles,uniform Paste
Certificate: ISO Feature: Excellent Resistance
High Light:

acetoxy silicone sealant


weatherproof silicone sealant

Product Description


Class 25 Neutral Silicone Sealant





General purpose, neutral cure silicone sealant for general sealing, general glazing, waterproofing applications



l One part, neutral cure

l Easy of application

l Non-corrosive

l Good weatherability and resistance to UV radiation ,heat and humidity, and ozone

l Excellent resistance to temperature extremes, unaffected performance from –50 ℃ to +150 ℃

l Good unprimed adhesion to wide range of substrates

l Good compatibility with other neutral silicone sealants




GB 996 is available in black, gray, white and other customized colours.



These values are not intended for use in preparing specifications.

Test Method Property Unit Standard Result
GB/T 13477 (ISO 7390) Slump mm





GB/T 13477 (ISO 8394) Extrusion rate ml/min. ≥80 418
GB/T 13477 (ASTM D2377) Tack free time h ≤3 0.7
GB/T 13477 (ISO 7389) Extension recovery % ≥80 93
GB 16776 (ISO 10563) Weight loss % ≤10 7
GB/T 13477 (ISO 8339) Tensile Modulus MPa >0.4 1.0
GB/T 13477 (ISO 11600) Movement capability % ±25 ±25
JC/T 485 Adhesion after UV exposure  



No failure
GB/T 13477 Adhesion at fixed stretch  



No failure
GB/T 13477 Adhesion after heat contract and cold extension  



No failure
GB/T 13477 Adhesion after water immersion  



No failure

*GB: Chinese National Standard

JC/T: Chinese Recommended Standard for Construction Materials

ASTM: American Society for Testing and Materials

ISO: International Standardization Organization


Class 25 Neutral Silicone Sealant 0


GB 996 is available in disposable cartridges (net 300ml),24 pieces to a carton, and sausages (net 500ml),20 pieces to a carton.



GB 996 is designed to meet or even exceed the requirement of

l Chinese national standard

GB/14683-2003 20HM

l Complies with ASTM C 920



GB 996 should be stored in original unopened containers. It has a shelf life of 12 months from the date of manufacture.



GB 996 should not be applied:

l For structural glazing

l To the materials that bleed oils , plasticizers or solvents, such as impregnated wood, oil-based caulks

l In totally confined spaces as sealant requires atmospheric moisture for cure

l To frost laden or damp surfaces

l For continuous water immersion

l When surface temperature below 4℃ or over 50℃



Surface Preparation

Clean all joints removing all foreign matter and contaminants such as oil, grease, dust, water, frost, old sealants, surface dirt, or glazing compounds and protective coatings.


Application Method

Mask areas adjacent to joints to ensure neat sealant lines. Apply GB 996 in a continuous operation using dispensing guns. Before a skin forms, tool the sealant with light pressure to spread the sealant against the backing materials and joint surfaces. Remove masking tape as soon as the bead is tooled.



Complete technical information and literature, adhesion testing and compatibility testing are available from Guibao. SAFETY INFORMATION

l GB 996 is a chemical product, not edible, no implantation into body and should be kept away from children.

l Cured silicone rubber can be handled without any risk to health.

l Should uncured silicone sealant contact with eyes, rinse thoroughly with water and seek medical treatment if irritation persists.

l Avoid prolonged exposure of skin to uncured silicone sealant.

l Good ventilation is necessary for work and cure places.


Get in touch with us

Enter Your Message

You Might Be Into These