| "|" type arc top, one-finger button, adjustable cap liner, with anti-static, flame retardant function, widely used in electric power, chemical industry, coal and other industries.

Basic performance

(1) Impact absorption performance: according to the specified method, after high temperature, low temperature, water immersion, irradiation pretreatment to do impact test, the force transferred to the head mold does not exceed 4900N; the cap shell shall not have debris fall off.

(2) puncture resistance: according to the specified method by high temperature, low temperature, water immersion, irradiation pretreatment to do puncture test, the steel cone does not contact the surface of the head mold; cap shell shall not have debris off.

(3) Strength of mandibular band: tested according to the specified method, the force value when the mandibular band breaks should be 150-250N.

Special performance

(1) Electrical insulation performance: tested according to the specified method, the leakage current shall not exceed 1.2mA.

2)Flame-retardant performance: tested according to the specified method, the renewed combustion time shall not exceed 5s, and the cap shell shall not be burnt through.

(3) Lateral rigidity: tested according to the specified method, the maximum deformation does not exceed 40mm, the residual deformation does not exceed 15mm, the cap shell shall not have debris off.

(4)Antistatic performance: tested according to the specified method, the surface resistance value is not more than 100 million ohms.

(5) Low temperature resistance: according to low temperature (-20 ℃) pre-treatment for impact test, the force transferred to the head mold does not exceed 4900N; cap shell shall not have debris off; then another sample by (-20 ℃) pre-treatment to do puncture test, the steel cone shall not contact the surface of the head mold, cap shell shall not have debris off.