Jiaxing Burgmann Mechanical Seal Co., Ltd. Jiashan King Kong Branch

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Replace Grundfos Pump Single Spring Seal 16mm

Product Details

Place of Origin: Zhejiang, China

Brand Name: JG

Certification: FDA certificate

Model Number: A/B

Payment & Shipping Terms

Minimum Order Quantity: 1pcs

Packaging Details: white box

Delivery Time: 3~10DAYS

Payment Terms: T/T,Western Union,MoneyGram

Supply Ability: 1000PCS

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Specifications

Description

Specifications

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                                                                                                                                                                                                                                                                                                                                                                                                      Grundfos pump replacement seal, 16mm water pump spring seal, single spring seal for Grundfos
                                                  

Product Name:	Replace Grundfos Pump Seal	Size:	16mm
Seal Faces:	Silicon Carbide / Carbon-Graphite	Pressure:	Up To 3Mpa
Elastomer (O-Ring):	NBR (for Cold Water, Oils), EPDM	Temperature:	-10°C To +180°C

Product Name:	Replace Grundfos Pump Seal
Size:	16mm
Seal Faces:	Silicon Carbide / Carbon-Graphite
Pressure:	Up To 3Mpa
Elastomer (O-Ring):	NBR (for Cold Water, Oils), EPDM
Temperature:	-10°C To +180°C

Description

Replace Grundfos Pump Single Spring Seal 16mm

The Replace Grundfos Pump Single Spring Seal 16mm is a non-OEM (aftermarket) mechanical seal designed as a functional and dimensional equivalent to the original single-spring seal used in specific Grundfos centrifugal pumps. This cartridge mechanical seal features a 16mm bore and utilizes a single spring design, engineered for direct replacement in compatible Grundfos pump models while offering cost-effectiveness and shorter lead times.

Core Product Features

Feature	Description & Procurement Key
Shaft Diameter	The primary dimension that must match exactly. The 16mm specification indicates the diameter of the pump shaft for which the seal is designed. This is the foremost and non-negotiable sizing parameter.
Spring Design	Critical structural characteristic. Single Spring indicates the seal uses one large helical spring (as opposed to multiple small springs) to provide the closing force. This design affects the seal's dimensions and operational behavior.
Construction & Type	Typically a Cartridge Seal. All components (rotary and stationary faces, spring, sleeve, O-rings) are pre-assembled into a single unit, simplifying installation and minimizing assembly errors.
Material Configuration	The key determinant of service life. Must be selected based on the pumped fluid. Common configurations include: • Seal Faces: Silicon Carbide / Carbon-Graphite (cost-effective for clean water) OR Silicon Carbide / Silicon Carbide (for abrasive media) • Elastomer (O-Ring): NBR (for cold water, oils), EPDM (for hot water ≤ 120°C), FKM/Viton® (for chemicals, higher temperatures)

Procurement and Replacement Guide

Steps for Successful Replacement:

Identify Source Information: Locate the pump's nameplate data (model e.g., CR5, CR10, CH2-30) and/or the physical old seal. This is the most reliable reference.
Cross-Reference with Supplier: Provide the supplier with:
- Optimal Data: Pump model + clear photos of the old seal
- Key Dimensions: Confirm the 16mm shaft diameter and, if possible, provide the seal chamber's bore and depth
- Operating Conditions: Specify the fluid (e.g., 60°C hot water, sandy water, 3% NaOH solution), along with its temperature and pressure
Verify Supplier Expertise: Choose a specialized seal supplier who can provide detailed dimensional drawings and material certifications, confirming their product is a direct replacement design for Grundfos pumps.

Critical Note: Do not order based solely on the description "16mm single spring." It is essential to provide the supplier with clear photographs of the old seal (especially faces and side profile), measured dimensions, and complete operating conditions for final verification.

Product Specifications

Features:

High pressure water pump seal JG A for CR-8 multistage pump
Application: replacement for Grundfos pump seal CR-4, CR-8, CR-16
Specification: double face seal, single spring
Certification: ISO9001, FDA

Operating Limits:

Parameter	Specification
Shaft Diameter	12 & 16mm
Pressure	up to 3Mpa
Temperature	-20~180°C
Sliding Velocity	15m/s

Material Composition:

Component	Materials
Rotary Ring	Car / SIC / TC / Cer
O-Ring	EPDM, NBR, AFLAS, Kalrez, PTFE
Spring and Metal Parts	SUS304, SUS316, Titan, Hast C, 904L
Stationary Ring	Car / SIC / TC / Cer

Product Advantages

Balanced seal design
Easy to replace without dismantling the pump part
Excellent product performance
Prompt delivery
Superior customer service
Small orders accepted

Applications

Water and waste water technology
Chemical industry
Refining technology
Dirty, abrasive and solid containing media
Fugitive hydrocarbons (no API seal!)
Sticky and stringy media
Chemical standard pumps
Sewage pumps

Shipping & Payment Terms

Port of Loading: Shanghai
Shipping Method: DHL, UPS, FEDEX, TNT, etc
Payment Terms: T/T, Western Union, Money Gram

Our Services

OEM/ODM orders are available for our factory
Accept customized mechanical seals according to your drawing or requirements
Small quantity is accepted
Provides excellent quality with competitive price

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