KHNP-KNP BUSINESS CATALOGUE

O-Ring Product Description: Dongsuh offers various types of rubber packings. O-rings are primarily used to prevent the leakage of fluids or gases. However, they can also serve as dust seals, drive belts, or be used on rotating shafts. Most O-ring seals can be classified into one of the three arrangements shown below: Specification: • Customizable depending on service conditions • Application: Valve Actuator, Pump • Materials: Choose appropriate material according to NBR, HNBR, EPDM, Silicone, FPM (Viton), Kalrez, CR rubber, temp. and other working materials. Domestic Track Records Main Client GS Donghae TPP Wolsung NPP Taean TPP Delivery Year 2025 2025 2025 Supplier Information • Dongsuh Industry Co., Ltd. Overseas Track Records Client (Country) North Bangkok CCPP (Thailand) Thai Binh TPP (Vietnam) MMB (Mexico) Delivery Year 2025 2025 2025 PTFE V-Packing Product Description: Each lip of a V-packing set independently reacts to pressure and automatically forms a seal. The multiple-lip configuration evenly distributes pressure and maintains an effective seal along the shaft. • Elimination of costly seal failures or blowouts • Reduced installation costs • Reduced equipment downtime with precise seal specifications • Lower inventory costs • Lower friction – Friction, a measurement of the resistance to sliding between a seal and hardware surfaces, is directly related to the seal material’s coefficient of friction and the total load. Each lip in a V-packing set independently responds to pressure to form a tight seal, with the multi-lip design ensuring even pressure distribution along the shaft. This design reduces friction, installation costs, and downtime, while extending service life by up to 50% compared to braided styles. It also minimizes inventory costs and prevents costly seal failures or blowouts. Specification: • Application: Control Valve, Piston Rod • Customizable depending on service conditions Domestic Track Records Main Client Doosan Samcheok TPP Busan CCPP Delivery Year 2025 2025 2025 Supplier Information • Dongsuh Industry Co., Ltd. Overseas Track Records Client (Country) North Bangkok CCPP (Thailand) Nghi Son Refinerys (Vietnam) Bang Pakong TPP (Thailand) Delivery Year 2025 2025 2025 O-Ring, Gasket, Seal 053 KHNP-KNP BUSINESS CATALOGUE

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