9645 948 8525 – STIHL O‑Ring N74×2 (NBR90)
Product Description
The STIHL O‑Ring (Part No. 9645 948 8525), also known as N74×2 in durable NBR90 rubber, is a genuine OEM seal essential for maintaining airtight connections in STIHL pressure washers and other sealed systems. Engineered to resist oil, fuel, and harsh environmental exposure, this high-precision seal helps avoid costly leaks and preserves equipment performance.
Key Features
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✅ OEM STIHL Part Number: 9645 948 8525
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✅ Dimensions: Inner diameter 74 mm × Cross-section 2 mm
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✅ Material: NBR90 (nitrile rubber) — resistant to oil, fuel, and abrasion
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✅ Forms a tight seal to prevent fluid or air leaks
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✅ Genuine STIHL quality ensures durability and proper fit
What It’s Used For
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Sealing pressure washer pumps or hose couplings on STIHL models
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Preventing leaks in high-pressure systems for safe operation
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Replacing degraded or brittle seals during routine maintenance
Why Choose This O‑Ring
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✔️ OEM quality guarantees a precise fit and correct tolerances
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✔️ High-grade NBR rubber resists fuel, oil, and outdoor conditions
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✔️ Extends lifespan of pumps and couplings by preserving seals
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✔️ Affordable replacement — better than dealing with leaks or damage
Compatible With STIHL Units
This o-ring fits various STIHL pressure washer models known to use the same seal size:
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RE 110 Plus
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RE 120 Plus
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RE 130 Plus
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RE 140 Plus
Always verify your model’s parts diagram to confirm this o‑ring matches the seal you need.
Pack Contents
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1 × STIHL O‑Ring N74×2 (Part No. 9645 948 8525)
Enhance reliability and prevent fluid leakage with the STIHL 9645 948 8525 O‑Ring—your go-to replacement for pressure washer seal maintenance.
