VELCRO® Brand ALFA-LOK™ Fastener with SilverTape® 5310. The SilverTape® 5310 from AFTC is a transparent, acrylic based adhesive. ALFA-LOK™ Fastener in combination with this adhesive tape is designed for usage where a transparent bond is required and no stress corrosion may occur. It dampens vibration, is resistant to UV rays, plasticizers and other chemicals and guarantees long term stability.