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- 4247 505 0800 – STIHL Sealing Ring Genuine OEM Part for SG 20
Description
4247 505 0800 – STIHL Sealing Ring Genuine OEM Part for SG 20
The STIHL Sealing Ring 4247 505 0800 is a genuine OEM replacement sealing component designed for the SG 20 sprayer spray gun and spray lance/wand assembly. This sealing ring provides a secure, leak-free connection between spray system components, ensuring consistent pressure and reliable spray performance.
Sealing rings are critical for preventing fluid leaks and maintaining proper pump and spray gun operation. Over time, seals may wear, crack, harden, or become damaged due to chemical exposure and repeated use. A worn sealing ring can result in leakage, pressure loss, or uneven spray output.
Replacing the sealing ring with the correct genuine STIHL OEM part restores proper sealing integrity, safe operation, and dependable spraying performance.
Manufactured to STIHL factory specifications, this OEM sealing ring ensures precise fitment, durability, and long-term reliability under demanding agricultural and landscaping conditions.
Product Details
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Part Number: 4247 505 0800
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Brand: STIHL
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Part Type: Sealing Ring / Seal
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Application: Spray gun and spray lance connection sealing
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Condition: New Genuine OEM Part
Function
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Provides leak-free sealing between spray components
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Maintains proper pressure and consistent spray output
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Replaces worn, cracked, or damaged sealing rings
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Prevents fluid leakage at connection points
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Supports safe and reliable sprayer operation
⚠️ A damaged seal may cause leaks or pressure loss.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4247 505 0800
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Your unit model matches those listed below
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Application matches your STIHL illustrated parts diagram
⚠️ Sealing components are model-specific — always verify by OEM part number.
Compatibility
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STIHL SG 20 (Spray Gun, Spray Lance/Wand Assembly)
(Exact fitment depends on production version — always verify using OEM parts diagram.)
Installation Notes
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Relieve sprayer pressure before servicing
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Disassemble connection points as required
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Remove old sealing ring carefully
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Install new sealing ring in correct position
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Reassemble and test for leaks
⚠️ Ensure seal is seated properly to prevent leakage.
Maintenance Tips
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Inspect seals regularly during servicing
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Replace worn rings promptly to prevent pressure loss
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Rinse spray components after chemical use
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Store sprayer in dry conditions
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Always use genuine STIHL OEM sealing parts
