UV10TK40, a UV-curable, no-mix epoxy resin system, boasts of exceptional sealing and gap-filling properties in applications such as aligning parts and bonding irregularly shaped surfaces. It specifies a surface hardness of Shore A greater than 75 and a viscosity of 35,000 to 45,000 cps. Other features include a typical tensile strength of 8,300 psi, a Young's modulus of 245,000 psi, and an elongation at break of 6%. In addition to standard packaging, UV10TK40 is available in ready-to-use syringe applicators. The system contains no solvents or other volatiles and is 100% reactive. MASTER BOND INC., Hackensack, NJ. (201) 343-8983.