Products Description
Type-30 Brass Stuffing Box Gland | Agricultural Plunger Pump Packing Compression Nut
Precision-Machined Axial Compression Interface featuring Anti-Galling Thread Geometry for High-Pressure Sprayer Seal Management.
Plunger pump 30 brass press cover gland
The Type-30 compression gland is a precision-machined sealing component designed for reciprocating plunger pumps on agricultural power sprayers. Crafted from solid C36000 forged brass with accurate trapezoidal threads, it evenly converts tightening torque into stable axial compression on packing rings. This balanced clamping force forms a reliable hydrostatic seal around the plunger shaft, stopping high-pressure liquid leakage while retaining a thin lubrication film to reduce friction and heat buildup.
Engineered to match Type-30 sprayer pump heads and compatible Type-26 platforms, this gland maintains consistent seal tightness during long hours of continuous field spraying. It eliminates pressure bypass and dripping issues, delivering stable high-PSI performance for orchard maintenance and large-scale crop dusting operations.


Technical Profiles & Materials
Forged Brass Structural Core: Precision-machined from C36000 leaded brass alloy, offering superior machinability, exceptional corrosion resistance against organophosphate chemicals, and a self-lubricating low-friction thread interface.
Anti-Galling Surface Protocol: Thread flanks undergo a specialized surface passivation treatment, preventing cold-welding and mechanical seizure during repeated tightening cycles in high-moisture agricultural environments.
Tolerance-Driven Centering Geometry: The internal bore is precision-bored with a controlled radial clearance to maintain uniform annular compression around the plunger shaft, eliminating eccentric packing wear and premature seal failure.
Trapezoidal Thread Compression Logic: Features a heavy-duty ACME-style thread profile, engineered to convert moderate manual torque into high-magnitude uniform axial force, achieving consistent packing-ring compression without thread stripping or galling.
Technical Specifications
| ITEM | DETAILS |
| Type | Plunger Pump Packing Gland / Compression Nut |
| Application | Agricultural Power Sprayer |
| Code | 0302128 |
| Material | C36000 Forged Brass |
| Rated Current | Up to 5.0 MPa (725 PSI) |
| Brand Name | SeaSummer |
| Operating Temp | 0°C to +70°C |
| Delivery Time | 30 Days |
| Packaging | Cardboard packaging |
Products Application

Systematic Plunger Seal Containment
Specifically configured as the primary packing compression interface for 30-type and 26-type piston powerheads. It maintains the critical balance between complete fluid containment and the micro-lubrication film necessary to prevent plunger shaft scoring and thermal buildup during high-frequency reciprocation.

High-Pressure Orchard Sprayer Maintenance
Ideal for the routine field maintenance and packing replacement in trailer-mounted and tractor-driven orchard spraying equipment. Its anti-galling brass construction allows for rapid gland removal and reinstallation without specialized tooling, minimizing spray-season downtime.

Industrial Aftermarket Component Supply
An essential critical-wear structural component for agricultural pump repair centers and equipment dealerships. Its standardized Type-30 thread profile and robust forged construction provide a reliable, high-persistence solution for restoring factory-spec hydrostatic sealing integrity in global agricultural sprayer fleets.
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
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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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