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**Product Specifications:**

**Brand:** 3M

**Product Name:** Dual Lock SJ3550

**Type:** Mushroom Hook and Loop Fastener

**Strength:** High strength double lock fastener

**Widths Available:** 1 inch, 2 inches, 6 inches

**Standard Length:** 50 yards

**Roll Length:** 45.7 meters

**Thickness:** 6mm

**Adhesive Type:** Multi-functional acrylic adhesive

**Color:** Black

**Material:** Acrylic foam tape with mushroom heads

**Short-term Temperature Resistance:** 100°C

**Long-term Temperature Resistance:** 70°C

**Mushroom Head Density:** 400 stems per square inch

**Release Liner Thickness:** 0.08mm

**Width:** 25.4mm

**Applications:** Suitable for various parts fixation such as ceiling, dashboard, interior panels, windshield, triangular windows, sunroofs, etc.

**Features:** Provides shock absorption properties, interlocking mushroom heads for secure closure, can be opened and closed up to 1000 times without losing strength

**Recommended Uses:** Golf cart windshield fixation, signage transparent panel fixation, speaker resonant part bonding, grinder equipment fixation, truck advertising fixation, etc.

**Usage Tips:** Allow 24 hours after application before hanging items

**Storage Conditions:** Store in original packaging at temperatures between 16°C to 27°C and relative humidity of 40% to 60%

**Shelf Life:** Recommended for use within 24 months from the production date

**Installation Instructions:**

1. **Surface Preparation:** Clean and dry the surface before application, free from dust, moisture, and oil. Use a 50% isopropyl alcohol (IPA) solution for cleaning.

2. **Bonding:** Peel off the release liner, align and press the adhesive surfaces together. Apply pressure of at least 15psi. Allow the adhesive to cure for 72 hours at 23°C for optimal strength.

3. **Curing Time:** For accelerated curing, increase storage temperature or pre-treat the surface. Avoid direct sunlight exposure and maintain temperatures between 21°C to 38°C during use.

**Note:** Avoid prolonged exposure to sunlight, high humidity, and temperatures below 15°C.