3M Dual Lock Reclosable Fastener SJ3540 Roll 50 yd

3M Dual Lock SJ3540 Reclosable Fastener Roll

This 3M Dual Lock SJ3540 roll provides a reclosable fastening solution for indoor mounting tasks. The product uses interlocking stems on a polypropylene and polyolefin backing with a synthetic rubber adhesive. It is supplied as a 50-yard roll in black for applications such as panel attachment, fixture mounting, and general industrial assembly. The fastener engages to a thickness of 0.23 inches.

Synthetic Rubber Adhesive on Polyolefin Liner

The synthetic rubber adhesive bonds to a variety of interior surfaces while the white polyolefin liner protects the adhesive until application. The liner measures 5 mil thick and removes cleanly to expose the adhesive face. This combination allows the fastener to be pressed onto substrates such as wood, plastic, or metal for immediate holding power. The adhesive is formulated for indoor environments up to the stated temperature limit.

250 Stem Density Rated for 1000 Closure Cycles

The fastener features a stem density of 250 per square inch and is rated for 1000 closure cycles before performance declines. This specification determines whether the product suits applications requiring repeated opening and closing, such as access panels or removable equipment mounts. The maximum operating temperature is 49 Celsius or 120 Fahrenheit, which defines the thermal limit for reliable engagement.