메탈링/메탈씰_Brands Metal Ring/Sea Brands/Manufacturers Metal Rings 특장점 Metal Rings 적용 설계 Metal Rings 치수규격 Metal Ring Brands METAL RING BRANDS Parker Parker Metal Seals(pdf) Technetics HELICOFLEX®(pdf) DELTA®(pdf) O FLEX ™ (pdf) C FLEX ™ (pdf) E FLEX ™ / OFLEX ™ (pdf)