Products Description
HUS365 HUS372 Complete Engine Gasket Set | 70cc Professional Chainsaw Overhaul Kit
Comprehensive Pneumatic Isolation Seal Kit featuring Cylinder-Base, Crankcase-Parting, and Exhaust Interface Gaskets for Large-Displacement Forestry Powerhead Restoration.
Chain saw HUS365/HUS372 Gasket set
The HUS365/HUS372 complete gasket set constitutes a precision-engineered pneumatic-isolation kit designed for the absolute restoration of crankcase and cylinder sealing integrity in 70cc-class professional chainsaws. Each gasket in this three-piece set serves a distinct and non-negotiable sealing function within the engine's pressure-vacuum dynamics: the crankcase-parting gasket seals the two halves of the split crankcase against the pressurized fuel-air-oil charge, the cylinder-base gasket isolates the cylinder-to-crankcase interface under the extreme thermal cycling and mechanical load of combustion, and the exhaust-port interface gasket prevents the high-pressure, high-temperature exhaust-gas leakage at the cylinder-to-muffler junction. Each gasket is precision die-cut from a high-density non-asbestos fiber composite or multi-layer embossed metallic substrate, manufactured to exact OEM dimensional specifications to ensure zero-tolerance bolt-pattern alignment and port-aperture registration. Purpose-calibrated for the HUS365 and HUS372 platform-the workhorse 70cc professional felling saws that power commercial timber-harvesting operations worldwide-this kit provides a single-source solution for the complete engine-resealing procedure required during every bottom-end and top-end rebuild.
Technical Profiles & Materials
Crankcase-Parting Gasket - Split-Case Pneumatic Barrier Largest contoured fiber composite gasket fits full crankcase split line including oil pump cavity. Even bolt compression stops crankcase gas leakage, avoiding lean fuel mix, rough idle and power drop on 70cc chainsaws.
Cylinder-Base Gasket - Combustion-Chamber Thermal Isolation Multi-layer graphite or embossed steel gasket sits under high heat & load between aluminum cylinder and crankcase. Absorbs uneven thermal expansion to stay fully sealed without cracking or extrusion under heavy cutting loads.
Exhaust Interface Gasket - High-Temperature Gas Containment Heat-resistant metal/graphite gasket endures sustained exhaust temperatures over 500°C. Controlled crush thickness fills flange surface gaps, blocks exhaust blow-by that causes power loss, carbon buildup and loud popping noise.
OEM-Spec Die-Cut Dimensional Compliance CNC precision die-cut with ±0.15mm tolerance. All bolt holes, ports and edges align perfectly with engine castings, eliminating port blockage and misalignment leaks common on cheap generic gaskets.
Technical Specifications
| ITEM | DETAILS |
| Type | Complete Engine Overhaul Gasket & Seal Set |
| Application | HUS365 / HUS372 Chainsaw / 70cc-Class Professional 2-Stroke Engine |
| Code | 0113079 |
| Material | High-Density Non-Asbestos Fiber Composite / Graphite / Embossed Multi-Layer Steel |
| Details explanation | 3-Piece Set: Crankcase + Cylinder-Base + Exhaust Interface Gaskets |
| Brand Name | SeaSummer |
| Operating Temp | -20°C to +500°C+ |
| Delivery Time | 30 Days |
| Packaging | Cardboard packaging |
Products Application
Complete 70cc Engine Bottom-End & Top-End Rebuild
Serves as the definitive engine-resealing consumable kit for professional chainsaw rebuild centers restoring HUS365 and HUS372 powerheads that have been removed from service for a complete overhaul-encompassing both the crankcase-splitting procedure to replace worn main bearings and crankshaft seals, and the cylinder removal to inspect piston, rings, and bore condition. The three-piece set provides every static sealing element required to reassemble the engine with factory-spec pneumatic integrity, eliminating the diagnostic uncertainty, parts-ordering delays, and assembly errors associated with sourcing individual gaskets from multiple suppliers.
Post-Crankcase Air-Leak Engine Salvage
Ideally suited for rescuing 70cc professional felling saws that have developed the diagnostic signature of a crankcase air leak-an engine that refuses to hold a consistent carburetor tune, progressively loses power under cutting load as the crankcase charge escapes past a failing gasket, and exhibits the lean-running symptoms (overheating, piston-scoring, seizure risk) that threaten catastrophic engine failure. Replacing all gaskets simultaneously eliminates the possibility that the identified air leak is the only leak, ensuring the rebuilt engine's induction, compression, and exhaust systems are all restored to absolute sealing integrity.
Professional Forestry Fleet Rebuild Standardization
An essential engine-overhaul consumable kit for large-scale logging contractors, chainsaw dealership service departments, and forestry equipment distributors maintaining fleets of HUS365 and HUS372 felling saws-the backbone of commercial timber-harvesting operations worldwide. The complete three-piece kit format reduces the parts-ordering complexity from managing three separate OEM gasket part numbers to a single kit SKU, eliminates the risk of discovering a missing or incorrect gasket mid-rebuild, and ensures that every technician-regardless of experience level-performs a complete engine reseal rather than the partial gasket replacement that leaves a known-failure-prone original component in place.
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
Trusted Partnership Power
YOUR PROFESSIONAL ONE-STOP SOURCE
FOR 10000+ OUALITY PARTS
Verified Factory Excellence
BACKED BY 200+ TRUSTED FACTORY PARTNERS
Production process
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FAQ
Q: Are you an impartial industrial components dealer or a direct China water pump factors factory?
A:We are a direct, ISO9001-certified engineering water pump components manufacturing facility and precision fluid-control factor manufacture exporter primarily based in China. We function our personal cleanroom injection molding bays, computerized ultrasonic welding arrays, computerized hydraulic stress check stations, and clean-room packaging lines, passing direct-factory wholesale price financial savings straight to your element procurement margins.
Q: Can your manufacturing unit furnish full certification forms for food-contact or consuming water compliance?
A: Yes, absolutely. For food, beverage, or scientific applications, our manufacturing unit makes use of one hundred percent virgin, un-recycled polypropylene resins accompanied by means of fabric traceability certificates. We mechanically furnish B2B purchasers with complete FDA compliance documentation, NSF-grade compound declarations, and RoHS/REACH chemical protection screening sheets to make certain clean clearance thru worldwide customs.
Q: Do you provide customization picks for distinctly corrosive fluids like sturdy acids or ozone?
A: Yes, we are a thoroughly succesful OEM/ODM supplier. For aggressive chemical or ozone environments, we can improve the 12x26.5mm valve configuration in our factory: substituting the general PP housing with top class PVDF (Fluoropolymer) and changing any steel springs with Hastelloy or whole springless gravity-ball architecture, making sure final chemical resistance.
Q: How do we impervious a pattern batch to execute computerized lifecycle and burst-pressure testing?
A: We relatively inspire complete laboratory contrast earlier than logging mass grant agreements. We can ship a pattern lot of 5-10 gadgets of our inventory 12x26.5mm take a look at valves for assessment (setup costs and DHL/FedEx air freight apply). Once the factors pass by your inner lifecycle verification and a formal wholesale quantity manufacturing contract or container run is locked in, the sampling charges are a hundred percent credited returned to your industrial balance.
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