1.
Dust proof performance-Test method for buses
GB/T12478-1990客车防尘密封性试验方法
2.
Due to shell has good dust seal to guarantee whole body anti explosion and to strengthen safety of coal feeder.
由于壳体的防尘密封，确保了整体防爆性，增强了给料机的安全性。
3.
Reciprocating rubber seals-Design criteria for standard applications-Part 3: rubber seals for wipers
GB/T10708.3-1989往复运动橡胶密封圈结构尺寸系列第三部分:橡胶防尘密封圈
4.
BALL JOINT SEAL BOOT
球形接头密封防尘套
5.
Dust and fog protected under sealed condition, IP44.
独特的密封式设计，防尘、雾，防护等级IP44。
6.
Knowledge in waterproof， dust proof and sealing.
具有防水、防尘和密封方面的知识。
7.
Sealed type bearings are mudproof, dustproof, and leakproof(grease) without the use of shaft seals.
密封型轴承具有防泥、防尘、防漏（脂）性能，无需使用轴密封。
8.
Tripe-lips type: the metal shield with long triple rubber lips has considerable large torque and good sealing.
三唇密封形式，金属防尘盖上带有三重细长密封胶唇的严格密封，具有较大的按触密封扭矩。
9.
Dampproof , dustproof and defending greasy dirt and harmful gas , sealing strong , acidproof alkali antidetonation.
防潮、防尘、防油污及有害气体，密封性强、耐酸碱抗震。
10.
Easy to be sealed, little dust, low noise, improving environmental pollution.
容易密封，粉尘少，噪声小，减少公害。
11.
blowout preventer of three stage packer type
三段密封器式防喷器
12.
FLEXIBLE CONDUIT WITH EX(d).PACKING GLAND
防爆密封接头挠性管
13.
EX(d).ARMORED-CABLE PACKING GLAND
防爆铠装电缆密封接头
14.
WATER-PROOF ARMORED-CABLE PACKING GLAND
防水铠装电缆密封接头
15.
EX(d). PACKING GLAND FOR CONNECTING PIPE
接管式防爆密封接头
16.
FLEXIBLE CONDUIT WITH WATER-PROOF PACKING GLAND
防水密封接头挠性管
17.
WATER-PROOF PACKING GLAND FOR CONNECTING PIPE
接管式防水密封接头
18.
Waterproofing and sealing of shield tail and sealing grease
盾构法隧道的盾尾防水密封与盾尾密封油脂