Keeping an HPLC system running is often a parts problem, not a technology problem. The pump diaphragms wear out, and suddenly you encounter pressure drift, leakage, or unstable baselines. This technical note introduces our two compatible PTFE diaphragm sets that replace common Shimadzu® OEM part numbers:228-55272-41 – For LC-30AD / i-Series 228-32784-91 – For LC-10/20/2010 / LC-30ADSF family (replaces old numbers 228-24311-01, 228-31828-00, Sciex™ 4425151)Quick OverviewOur Product...

In precision sealing applications, the performance of a seal does not depend only on the surface roughness (Ra, Rz, Rt) of the mating parts — surface hardness and treatment are equally critical. An optimal combination of surface finish, hardness, and coating ensures consistent contact pressure, minimizes wear, and extends service life. Improper surface conditions, on the other hand, often lead to leakage, abrasion, or premature seal failure. Importance of Surface Hardness Surface hardness...

Note: OEM part numbers are for identification only. XHH Seals is an independent manufacturer and is not affiliated with ERSA®. If you are maintaining ERSA selective soldering or wave soldering equipment, some seals and small consumable parts are hard to source or have long lead times. XHH Seals can manufacture compatible replacement parts based on your drawing or physical sample. We do not claim these are stocked items. This page is to show what we can produce as custom replacements. Part...

What Are Hammer Union Seals? Hammer unions are critical pipe connectors used in oilfield systems for transferring high-pressure fluids such as drilling mud, crude oil, and fracturing fluids. Each hammer union connection relies on a precision-engineered seal ring to ensure a leak-free joint under extreme pressure and temperature conditions. At XHH Seals, we manufacture high-performance hammer union seal rings designed to provide reliable sealing in harsh environments—up to 15,000 psi. XHH...

What Is a PolyPak Seal A PolyPak seal is a composite hydraulic seal consisting of:A polyurethane (PU) sealing lip An elastomer O-ring energizer (NBR or FKM)It is widely used in hydraulic cylinders for both rod sealing and piston sealing applications. In engineering terms, it is also called:O-ring energized lip seal Composite hydraulic sealPolyPak Seal Structure & Working Principle Structure A typical PolyPak seal includes:Outer sealing element: PU lip Inner energizer: O-ring...

1. Overview: The Two Critical Sealing Points of the JC Carter 50E701 Nozzle The JC Carter 50E701 series nozzle (including models 50E701-1, -2, and -3) is a standard-issue component in LNG (Liquefied Natural Gas) fueling infrastructure worldwide. Its operational reliability and safety depend entirely on two critical cryogenic sealing components. According to the official service manual's troubleshooting guide, nozzle leakage can be traced to two primary failure points :An external seal that...

Gate valves used in oil, gas, and high-pressure hydraulic systems demand absolute sealing integrity under severe static sealing conditions. Traditional elastomer seals often degrade under high pressure, chemical exposure, or thermal cycling. To overcome these challenges, PTFE Spring Energized Seals have become the preferred self-energizing solution for long-term gate valve sealing applications where safety, reliability, and performance are critical. Why Gate Valves Need High-Performance...

Quick Answer If you are evaluating rod or piston seals for a hydraulic cylinder, the decision depends on your system's pressure dynamics and reliability requirements:For superior low-pressure sealing & vacuum conditions: Choose PolyPak seals. For high-stability under pressure fluctuations & shock loads: Choose PolyPak seals. For cost-sensitive, simple pneumatic or steady low-pressure systems: Choose U-cup seals.Engineering Consensus: In the majority of heavy-duty hydraulic...

Compatible with P/N 7162043 Module Body & 7173117 Seal Service Kit We provide high-precision, cost-effective replacement components for the Nordson® Speed-Coat® 24V Booster Control Module (ref. P/N 7162080). Our upgraded components are engineered to improve wear resistance, sealing reliability, and long-term performance in continuous hot-melt dispensing environments. 1. Upgraded Replacement Module Body  (Compatible with P/N 7162043)Our module body is machined from aerospace-grade...

XHH Seals provides a replacement sealing repair kit for Nordson P/N 7143146, fully compatible with the TrueCoat® Control Module used in Nordson coating and adhesive systems. We provide precisely matched sealing elements utilizing superior materials suitable for high-temperature hot melt adhesive applications. Our objective is to assist customers in achieving high performance, extended service life, and significant cost optimization in equipment maintenance. 1. Technical Advantages of XHH...

XHH Seals Exhibition Announcement: PTC ASIA 2025 Exhibition Name: Power Transmission and Control (PTC ASIA 2025) Dates: 28–31 October 2025 Venue: Shanghai New International Expo Centre, China As a professional seal manufacturer and global exporter with over 15 years of expertise in high-performance sealing solutions. We specialize in providing durable, precise, and cost-effective sealing solutions. Our latest technologies and products across key categories, including:Hydraulic Seals...

Industrial operations relying on Nordson UM22, UM25, and UM50 melt valve controllers for precision fluid dispensing demand continuous, stable operation. XHH Seals, with over 15 years of expertise in high-performance sealing solutions (ISO 9001 certified), offers a fully compatible and performance-optimized alternative to the Nordson Rebuild Kit 1049908. This replacement solution is engineered to match the dimensional accuracy and functionality of the OEM kit while utilizing enhanced material...