🔧 Combu 42031 Replacement Cover O-Ring – Viton
For 70101 / 40130 / 40140 Oil Filters
The Combu 42031 O-Ring is a durable Viton replacement seal for Combu primary oil filters. Designed for 70101 series filters (also compatible with Combu 40130 and 40140 models), this O-Ring ensures a leak-proof seal between the filter cover and cup, maintaining reliable performance in your oil system.
Crafted from Viton, it provides excellent chemical resistance, high durability, and long-lasting service under heat and oil exposure.
✅ Key Features
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🔹 Compatible with Combu 70101, 40130 (300 Micron) and 40140 (100 Micron) filters
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🔹 High-quality Viton material for superior chemical and heat resistance
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🔹 Ensures a reliable, leak-proof seal between filter cover and cup
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🔹 Essential replacement part for proper filter operation
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🔹 Long-lasting durability for residential and commercial oil systems
📊 Specifications
| Parameter | Detail |
|---|
| Part Number |
42031 |
| Material |
Viton |
| Compatible Models |
Combu 70101, 40130, 40140 |
| Replacement For |
OEM cover O-Ring for 70101 |
| Type |
Filter cover O-Ring |
| Application |
Oil filters – primary filter seal |
⚠️ Common Symptoms / When to Replace
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Leaks at filter cover or housing
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Reduced oil pressure or vacuum issues
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Visible cracks, flattening, or wear on O-Ring
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Oil system performance is inconsistent
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Filter cup does not seal properly after maintenance
❓ FAQ – Frequently Asked Questions
Q: Which filters does this O-Ring fit?
A: Combu 70101, 40130 (300 Micron), and 40140 (100 Micron) models.
Q: What material is it made from?
A: Viton, providing high heat and chemical resistance.
Q: Is this O-Ring included with replacement filter elements?
A: No, it must be purchased separately to maintain a proper seal.
Q: How often should I replace the O-Ring?
A: Inspect it during every filter replacement; replace if cracked, flattened, or worn.
Q: Can it replace OEM parts from other brands?
A: This is designed for Combu filters; may fit equivalent models from other manufacturers, but verify compatibility.
🛒 Shopping Tips
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Always replace the O-Ring when installing a new filter element.
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Inspect for cracks, flattening, or wear to maintain a proper seal.
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Ensure you’re purchasing the Viton version for high durability and chemical resistance.
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Compatible with both 100-micron and 300-micron Combu oil filters.
