# EPDM과 NBR 고무 익스팬션 조인트 비교\n\n## B2B 구매자를 위한 가이드\n\n이 글은 해외 엔지니어링 구매자, 시공사, 유통업체 및 OEM/ODM 고객이 견적 요청 전에 필요한 기술 정보를 정리하도록 돕기 위해 작성되었습니다.\n\n## 배관 피팅: EPDM과 NBR 고무 익스팬션 조인트 비교\n\n제품명만 보지 말고 배관 크기, 압력 등급, 연결 표준, 재질, 유체, 온도, 설치 위치, 수량 및 도면을 확인해야 합니다.\n\n관련 제품에는 고무 익스팬션 조인트, 디스맨틀링 조인트, 파이프 커플링, 플랜지 어댑터, 금속 벨로우즈 조인트 및 방수 슬리브가 포함됩니다.\n\n## RFQ\n\n빠르고 정확한 견적을 위해 DN 크기, 압력 등급, 플랜지 표준, 재질, 사용 유체, 온도, 수량, 도면 또는 사진을 보내 주세요.\n\n- DN / size\n- pressure rating\n- connection standard\n- material\n- working medium and temperature\n- quantity\n- drawing, photo or specification\n\n## Quality and Packing\n\n출하 전에는 외관, 치수, 연결면, 부속품, 라벨 및 포장 방식을 확인합니다. 시험 요구사항은 생산 전에 확인해야 합니다.\n\n## Project Inquiry\n\n프로젝트용 배관 피팅이 필요하면 크기, 압력, 연결 표준, 재질, 유체, 수량 및 도면을 보내 주세요.
常见问题
?What is the main difference between EPDM and NBR rubber expansion joints?
EPDM is generally preferred for water systems, outdoor exposure and applications requiring ozone and weather resistance. NBR is generally more suitable for mineral oils, lubricants, fuels and selected oil-containing media, but its outdoor weathering resistance is normally lower.
?Can an EPDM rubber expansion joint be used with diesel or lubricating oil?
Standard EPDM is generally unsuitable for diesel, mineral oil and petroleum-based lubricants. NBR or another oil-resistant elastomer should be evaluated according to the actual oil composition, additives and temperature.
?Can an NBR rubber expansion joint be used in a water system?
Selected NBR compounds can be used with water, but EPDM is generally considered first for common water systems. Temperature, additives, outdoor exposure and compliance requirements must also be reviewed.
?Can EPDM and NBR be identified by colour?
No. Colour, smell and surface appearance are not reliable identification methods. Check the purchase order, approved drawing, batch records and agreed material documentation.
?Should EPDM or NBR be used for wastewater?
The decision depends on the wastewater composition. General wastewater may allow EPDM, while wastewater containing mineral oil or fuel may require NBR or another material. Chemicals, concentration and temperature must be confirmed.
?Does EPDM automatically qualify for potable-water service?
No. EPDM is only the base polymer family. Potable-water service requires confirmation of the specific compound, production controls and the compliance documents required by the target project or market.