Page 2 of News about Gaskets, Bolt & Nuts

Brief Introduction of Gaskets And Bolts And Nuts

Brief Introduction of The Gaskets And Bolts And Nuts Gasket types (rubber, metal, spiral-wound) and bolt materials (steel, alloy) ensure flange sealing under varied temperatures/pressures. Proper selection prevents leaks and enhances pipeline safety. 1.​ Flange gaskets In pipeline flange connections, flange gaskets play a crucial role as seals between two flanges. Due to the fact that flange failure usually manifests as leakage, the main task of gaskets is to fill gaps, prevent medium leakage,...

May 20, 2025

The Sealing of Flanges And Gaskets

Abstract: Flange sealing relies on bolt preload and gasket deformation to prevent leaks. Key factors include gasket type (metal/non-metal), surface design (flat, groove, ring), and operational conditions. Proper installation ensures safe, efficient pipeline connections.  Introduction: In petrochemical plants, flanges are one of the most important and common forms for connecting pipelines, fittings, valves, instruments, and equipment. Although this type of connection has the advantages of easy...

May 10, 2025

Rubber Gaskets for Flange Connections

Rubber Gaskets for Flange Connections: A Comprehensive Guide In critical pipeline systems—from petroleum and chemical processing to food and pharmaceutical industries—rubber flange gaskets play a vital role in ensuring leak-free operations. Their corrosion resistance, pressure tolerance, and flexibility make them indispensable for maintaining the integrity of industrial pipelines. Proper selection, installation, and maintenance of these gaskets are crucial for achieving a decade-long...

Apr 25, 2025

Materials of Flange Gaskets and Selection Guidelines

Exploring the Materials of Flange Gaskets and Selection Guidelines Flange gaskets, as the core sealing components in flange connections, are undeniably critical to system integrity. These circular ring-shaped materials, capable of plastic deformation while maintaining structural strength, work in conjunction with flanges and fasteners to ensure leak-proof connections and reliable sealing between pipelines, valves, and equipment. Despite their importance, gasket selection is often overlooked during...

Apr 10, 2025

Gasket Types & Selection for Industrial Flanges

Spiral-Wound Gaskets (1) Applicable Scope of the Spiral-Wound Gasket According to the petrochemical industry standard SH 3407-2013, spiral-wound gaskets are suitable for the following conditions: Nominal pressure range: PN 1.0–25.0 MPa Temperature range: Stainless steel strips with special asbestos filler: –50 to 500 °C Stainless steel strips with flexible graphite filler: –196 to 800 °C (≤ 600 °C for oxidizing media) Stainless steel strips with PTFE filler: –196...

Mar 20, 2025

Standards and Selection of Gaskets

Standards and Selection of Gaskets This article provides a comprehensive overview of gasket standards, manufacturer selection criteria, and selection methodologies. It outlines key gasket standards used in the chemical and petrochemical industries, specifies requirements for gasket manufacturers, and discusses critical factors in gasket selection, including pressure, temperature, and medium compatibility. Various gasket types—such as asbestos-rubber, PTFE, and spiral-wound gaskets—are...

Mar 09, 2025

The Tightening Sequence of Flange Bolts and Nuts

The Tightening Sequence of Flange Bolts and Nuts    Flange connections are widely used in industrial pipeline systems, pressure vessels, and other equipment. The tightening sequence of flange bolts and nuts is crucial for ensuring the sealing reliability and safe operation of the equipment. A proper tightening sequence ensures uniform force distribution across the flange surface, preventing localized over-compression of the gasket, which could lead to damage or leakage.   The primary...

Feb 27, 2025

How to Tighten Flange Bolts and Nuts Properly?

 How to Tighten Flange Bolts and Nuts Scientifically and Properly?  I. Technical Requirements for Tightening Flange Bolts and Nuts During Equipment and Pipeline Flange Installation 1. Inspection of Flange Fasteners Gaskets:   During installation, ensure the gasket is new, clean, and dry. Inspect the gasket for any defects or damage. Old gaskets must not be reused. Before installation, confirm that the gasket size and grade match the markings on the flange. Flanges:   Before installation,...

Feb 12, 2025

Materials Selection of Low-Temperature Flange Gaskets

Materials Selection of Low-Temperature Flange Gaskets 1. Materials Selection of Sealing Gaskets There are various types of flange gaskets, which can be broadly categorized into three groups based on their material properties: metal gaskets, metal-nonmetal composite gaskets, and nonmetal gaskets. According to their functions, they can be classified as low-temperature-resistant gaskets, reliable sealing gaskets, and corrosion-resistant gaskets. 2. Low-Temperature Resistance Performance Commonly used...

Jan 18, 2025

The Application and Important Role of Flange Gaskets

The Application and Important Role of Flange Gaskets 1. Application in Pipeline Systems Flange gaskets are one of the most common sealing components in pipeline systems and are widely used in industries such as chemical, petroleum, natural gas, and power. In pipeline systems, flange gaskets are typically installed between flanges. Through compression, they seal the connections in the pipeline system, preventing medium leakage and ensuring the system's safe operation. 2. The Important Role of...

Jan 08, 2025

Installation Notes for Flange Gaskets

Installation notes for flange gaskets Notes for gasket installation The sealing surface of gaskets and flanges should be cleaned thoroughly, and there should be no defects such as scratches or spots that affect the sealing performance of the connection.​ The outer diameter of the gasket should be smaller than that of the flange sealing surface, and the inner diameter of the gasket should be slightly larger than the inner diameter of the pipeline.  The difference between the two inner diameters...

Dec 24, 2024

Selection of Flange Gaskets

A gasket is a mechanical seal between two objects, and if selected properly, it can usually effectively prevent material leakage between the two objects. Improper selection can result in unnecessary losses. Today, we brought you the selection methods for flange gaskets. Let's learn together. Sealing mechanism of flange gaskets The leakage occurs when the medium flows through the interface between the inner and outer spaces is the leakage of the sealing surface. The fundamental cause of...

Dec 12, 2024