Sikaflex 221 One-Component Adhesive, Polyurethane Sealant For Metal, Paint Coatings, Ceramics

Advantages and unique features

• One-component - ready to use, no mixing required

• Non-sag - does not flow from vertical surfaces

• Meets EN45545-2 R1/R7 HL3 (railway)

• Resistance to aging and UV radiation

• Low odor

Properties and applications

• Chemical base: one-component polyurethane

• Color: black

• Density (uncured): 1.3 kg/l

• Application temperature range: +5 °C – +40 °C

• Open time: 45 min (23 °C/50 % RH)

• Skin formation time: 60 min (23 °C/50 % RH)

• Shrinkage: 5 %

• Shore A hardness: 40

• Tensile strength: 1.8 MPa

• Elongation at break: 500 %

• Tear propagation resistance: 7 N/mm

• Temperature range Working temperature: -50 °C to +90 °C (24 h), briefly up to +120 °C/ +140 °C

• Applications: sealing and gluing of car bodies, railway panels, metal elements, 2-component coatings, ceramics and plastics

Parameter | Value

Cartridge capacity | 300 ml

Base | One-component polyurethane

Density | 1.3 kg/l

Open time | 45 min (23 °C/50 % RH)

Skin formation time | 60 min (23 °C/50 % RH)

Shrinkage | 5 %

Hardness Shore A | 40

Tensile strength | 1.8 MPa

Elongation at break | 500 %

Tear propagation resistance | 7 N/mm

Temperature range working | –50 °C to +90 °C (24 h), +120 °C/ +140 °C short-term

Shelf life | 12 months (< 25 °C)

Instructions for use

1. Clean, degrease and dry the surfaces – remove dust, oil, grease.

2. Shake the cartridge before use and attach it to a manual or pneumatic gun.

3. Apply at a temperature of +5 °C – +40 °C; optimally +15 °C – +25 °C.

4. After application, join the parts within the open time (45 min).

5. Smooth the joint before the skinning time (60 min) has elapsed using Sika Tooling Agent N.

7. After use, clean tools and skin with Sika Cleaner-350H and water.

Store in a dry, cool place (+5 °C – +25 °C), away from UV radiation and frost. Use in the original, tightly closed container.

Color: nan