Sika 305 Neutral Ozone Resistance and Water Resistance Weatherproof Sealant

• CAS No.: Good
• Formula: Good
• EINECS: Good
• Bonding Function: Structural Adhesive
• Morphology: Solid-State
• Application: Glass, Aluminum Profile, Stainless Steel, etc
• Model NO.: SIKA 305
• Material: Silicone
• Classification: Room Curing
• Main Agent Composition: Natural Polymer
• Characteristic: Weatherability
• Promoter Composition: Solvent
• Composition: Organic Material
• Color: Black or Customized Color
• CAS No: 63394-02-5
• Mf: Mixture
• Main Raw Material: Silicone
• Brand Name: Dowsil
• Store Temperture: Below 27°
• Appearance: Paste
• Shelf Life: 12 Months
• Packing: 20 Can/ Carton
• Transport Package: Sausage
• Specification: 590ml
• Trademark: SIKA
• Origin: China
• HS Code: 3506100010
• Production Capacity: 10000pieces/Year

Product Description

• Very good resistance to weathering
• Movement capability of ±50 % (ASTM C 719)
• Very good workability

SikaHyflex®-305 AP is a 1-component, moisture curing, low-modulus elastic weather sealant.

Usage

SikaHyflex®-305 is designed for weather proofing and sealing applications where durability under severe conditions is required. SikaHyflex®-305 is particularly suited for use as a weather sealant for curtain wall and metal cladding facades.

Advantages

▪ Very good resistance to weathering
▪ Movement capability of ±50 % (ASTM C 719)
▪ Very good workability
▪ Good adhesion to a wide range of substrates
▪ Solvent-free
▪ Neutral cure

Typical Properties

Cure Time	4 to 7 days (73 °F / 50 % r.h.)
Curing Rate	~ 2 mm/24 hours (23 °C / 50% r.h.) (CQP 049-2)
Tack Free Time	~ 160 minutes (23 °C / 50% r.h.) (CQP 019-1)
Shore A Hardness	~ 25 (after 28 days) (ISO 868)
Movement Capability	± 25% (ISO 9047) ± 50% (ASTM C 719)
Service Temperature	−40 °C to +150 °C
Resistance to weathering	10 (ISO / DIS 19862)

Color

White, colonial white, aluminum gray, limestone, black, dark bronze, capitol tan, stone and medium bronze. Special architectural colors on request.