Loctite 545

Loctite 545

Loctite 545 is a pipe thread sealant that locks and seals metal pipes and fittings. Its special formula provides excellent lubricity, making pipes and fittings easier to install and remove. It is suitable for sealing fine-threaded fittings in hydraulic and pneumatic systems, as well as general-purpose small fittings.

Phương pháp sử dụng: Hệ thống phân phối; Thủ công
Applications:Hydraulic/pneumatic sealing; Pipe sealing; Thread sealing
Breakaway torque, Steel, M10:2.0 N·m (20.0 in./lb.)
Màu: Tím
Loại đóng rắn: Đóng rắn kỵ khí
Key characteristics:Lubricity: high lubricity; No fillers/particles; Solvent resistant; Viscosity: medium viscosity
Nhiệt độ hoạt động: -55,0 °C – 150,0 °C (-65,0 °F – 300,0 °F)
Dạng vật lý: Chất lỏng
Recommended for use with:Metal; Thread type: fine
Viscosity, 20 RPM:15000.0 mPa·s (cP)

Tổng quan về sản phẩm

LOCTITE 545 is a one-part Chất bịt kín ren engineered for locking and sealing metal pipes and fittings, especially in hydraulic and pneumatic systems. It features high lubricity to ease assembly, cures anaerobically (in absence of air between metal interfaces), and prevents loosening or leakage under vibration or shock. The formulation contains no fillers or particles, so it won’t contaminate system fluid lines or obstruct fine filters or valves.

Tính năng chính & Lợi ích

  • High lubricity — facilitates easy assembly and torque control

  • Medium viscosity — good flow into fine threads

  • Filler-free formulation — avoids contaminating fluids or clogging filters/valves

  • Cures in confined metal interfaces — in absence of air, forms seal and lock simultaneously

  • Recommended for fine threads — ideal for small fittings used in hydraulic/pneumatic systems

  • Temperature and service conditions — operates over –55 °C to +150 °C

Thông số kỹ thuật

Tài sảnGiá trị / Phạm vi
Màu sắcTím
Độ nhớtTrung bình
Operating Temperature–55 °C đến +150 °C
Breakaway Torque (Steel, M10)~2.0 N·m
Loại thuốc chữa bệnhAnaerobic curing between metal threads
Fluid CompatibilityGood resistance to hydraulic fluids, solvents etc.

Hướng dẫn sử dụng

Step-by-step guidance:

  1. Chuẩn bị bề mặt
     Clean threads to remove oil, dirt, and debris — use solvent or degreaser.

  2. Đơn đăng ký
     Apply a 360° bead of LOCTITE 545 starting 1–2 threads from leading edge of male thread (for larger threads, apply on both male and female).

  3. Lắp ráp
     Tighten the fitting per manufacturer’s torque recommendations. The adhesive flows and fills microscopic gaps as the parts are assembled.

  4. Curing / Handling
     Allow sufficient time for the seal to form. Full cure depends on metal type, ambient temperature, and thread engagement.

  5. Disassembly (if needed)
     Some assemblies can be disassembled with standard hand tools. If needed, localized heat may assist in breaking the bond.

Add usage tips, e.g. avoid over-application, ensure thread contact, allow cure before pressure, etc.

Ứng dụng điển hình

LOCTITE 545 is commonly used in:

  • Hydraulic fittings and lines

  • Pneumatic systems and air lines

  • Instrumentation and control valve fittings

  • Small diameter pipe threads in fluid power systems

  • Anywhere precise sealing and locking of metal threads is required

Câu hỏi thường gặp

  • Q1: Can LOCTITE 545 be used on stainless steel or plated threads?
    A1: Yes — LOCTITE 545 cures in confined metal interfaces and works with active and passive metals.

  • Q2: Does LOCTITE 545 contain particles or fillers that can clog filters?
    A2: No — it is formulated without particles or fillers, making it safe for fine filters and valves.

  • Q3: What is the torque breakaway value on steel?
    A3: Approximately 2.0 N·m (M10 steel).

  • Q4: What is the operating temperature range?
    A4: –55 °C to +150 °C.

  • Q5: Is it removable?
    A5: Fittings may be disassembled using hand tools; heat may facilitate removal if needed.

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