sight glass 铝6061钢化玻璃长形视窗铝油标铝油镜铝油窗油位计 body material:aluminum6061; window:tempered glass;seal ring: nbr/fkm; woriking temperature:-10 +120/-20 +200 视窗 本体材质：铝6061；视窗：钢化玻璃；密封圈：nbr/fkm; 工作温度：10 +120/-20 +200 关键字：铝6061钢化玻璃nbr/fkm长形视窗铝油标铝油镜铝油窗铝油位镜铝观油镜铝液位计铝视镜观液窗铝制冷视液镜油位计 no a b c d e g h di holes nr. rl-a001 60 45 39 18 14 35 10 5.5 4 rl-a002 80 45 59 18 22.5 35 10 5.5 4 rl-a003 100 45 79 18 35 35 10 5.5 6 rl-a004 125 45 104 18 45 35 10 5.5 6 rl-a005 160 45 139 18 40 35 12 5.5 8 rl-a006 200 45 179 18 40 35 12 5.5 10 rl-a007 250 45 229 18 40 35 12 5.5 12 rl-a008 rl-a009