Here are some important points to consider when selecting metal seals such as spring-energized C-rings! <Materials available upon request>

A high-performance seal manufacturer introduces important points for selecting metal seals such as spring-loaded C-rings.

A high-performance seal manufacturer of seal products such as spring-loaded C-rings, metal seals HELICOFLEXⓇ, and metal hollow O-rings introduces important points for making metal seals functional, as well as key considerations for designers. The selection of metal seals is crucially dependent on the design of the corresponding flanges. The materials of the flanges and bolts, the tightening load (minimum required bolt load during tightening), pressure, temperature, and the method of bolt fastening are all related to the occurrence of insufficient compression in metal seals. ★This document can be viewed immediately by clicking the download button. 【Contents (partial)】 ■ How to make metal seals functional? ■ Seal selection based on allowable leakage rate ■ Compression and recovery of metal seals ■ Bolt load and other factors *For more details, please download the PDF or feel free to contact us.

• Sealing

Excellent leakage tolerance and corrosion resistance! We provide products customized to the sealing characteristics that meet our customers' applications.

The "HELICOFLEX Seal" is a sSpring-energized metal seal developed in collaboration with the French Atomic Energy Commission (CEA). The remarkable performance of this product is the result of years of research and development, experiments, and practical applications in markets such as nuclear energy, aerospace, high vacuum, oil refining/chemicals, gas, and other general industries. With flexible design capabilities, we provide customized products tailored to the sealing characteristics that meet your specific applications. 【Features】 ■ Seal diameter φ4 to 8000mm ■ Pressure range from 10^-10 mbar to 3000 bar ■ Temperature range from -272℃ to 800℃ ■ Acceptable leakage rates that accommodate from foam liquid levels to ultra-high vacuum levels ■ Compatible with all flange standards and flange surfaces (PNEUROP, ASME, ISO, JIS, etc.) *For more details, please refer to the PDF document or feel free to contact us.

• Sealing

It is a metal seal with elasticity! Compatible with RF/FF, T&G, NW/KF, three-face contact type, ICF/conflat, irregular shapes, and rectangular shaped grooves!

The "Spring-energized metal C-Ring HELICOFLEX(R) Seal" demonstrates sealing performance through the plastic deformation of the outer casing and the elasticity of the spring. It is compatible with pressures ranging from 10^-10 mbar to 3000 bar and temperatures from -272℃ to 800℃. It has excellent adaptability to flange shapes and distortions. Materials: Aluminum, silver, copper, nickel, stainless steel, and others. 【Features】 ■ Seal diameter Φ4 to 8000 ■ Cross-section diameter 1.5 to 40 ■ Compatible with pressures from 10^-10 mbar to 3000 bar ■ Compatible with temperatures from -272℃ to 800℃ ■ Highly resistant to radioactivity *For more details, please refer to the PDF document or feel free to contact us.

• Sealing

We introduce C-rings with sections and thicknesses that take into account compressive loads.

The sealing concept of "C-FLEX TM" is the elastic deformation of a metal seal with a C-shaped cross-section. It is compensated by the internal pressure of the equipment to accommodate low design tightening pressure and uneven surfaces of the flange. It is utilized in a wide range of applications, including crude oil extraction, industrial turbines, valves, aerospace, automotive, and SOFC fuel cells (750°C for 40,000 hours). 【Features】 ■ Unique C-shaped cross-section structure ■ Cross-sectional diameter and thickness designed for low tightening pressure ■ Compatible with internal pressure, external pressure, and axial direction ■ Low design tightening pressure ■ Pressure range: from medium vacuum to 200 MPa (2000 bar) ■ Temperature range: -273 to 730°C (-46 to 1350°F) ■ The structure enhances sealing performance by providing auxiliary force from the operating pressure on the equipment side to the C-FLEX. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Sealing

Section diameter and wall thickness considering design tightening pressure! We offer basic shapes and high-pressure balance types.

"O-FLEX TM" is a metal O-ring with a cross-sectional diameter and wall thickness that takes into account the design tightening pressure (Y value). It can be manufactured for both internal and external pressure, and rectangular shapes are also available. The pressure range is from high vacuum to 500 bar (7,252 PSI), and the temperature range is from -273 to 650°C (-460 to 1200°F). 【Features】 ■ Cross-sectional diameter and wall thickness considering the design tightening pressure (Y value) ■ Can be manufactured for both internal and external pressure ■ Basic type and high-pressure balanced type ■ Rectangular shapes are also available *For more details, please refer to the PDF materials or feel free to contact us.

• Sealing

We have added a new **"Glossary"** to the Hyper CLT sheet website. In the civil engineering and construction industries, there are many specialized terms such as "CLT," "NETIS," "temporary roads," and "wooden lightweight sheets." Therefore, we have introduced related terms in an easy-to-understand manner so that those who are encountering Hyper CLT sheets for the first time can understand the products and technologies. Hyper CLT sheets are wooden lightweight sheets for civil engineering that utilize wood CLT and are registered under the Ministry of Land, Infrastructure, Transport and Tourism's NETIS technology as **"TH-250021-A."** We hope that by not only conveying the features of the product but also sharing the underlying technologies and terminology, users will feel a closer connection to Hyper CLT sheets. We will continue to enhance our website and provide clear information related to wood, NETIS, civil engineering, and CLT.

Hotron Inc. has launched its new product, the "Vehicle Count Sensor CCS3"! This product is a ceiling-mounted sensor that combines infrared and radar technology. It reliably detects vehicles in both directions with a single unit, accommodating traffic during congestion and vehicle passing, thus achieving efficient occupancy management in large parking lots. Additionally, it can be utilized for exit warning purposes in addition to vehicle counting, contributing to the safe and smooth operation of parking facilities. 'Features' - Improved detection performance against changes in road surface during rainy weather by using both infrared and radar. - Equipped with IP67 waterproof and dustproof performance, making it effective even in salt damage areas. - Various settings can be configured from a dedicated app (for Android devices), with current settings easily understandable at a glance. - The base dimensions are the same as the previous model "CCS2," allowing for smooth replacement of existing equipment. *For more details, please refer to the product information, catalog download, or contact us.*

On September 15, 2026, we issued a press release regarding the wooden lightweight sheet "Hyper CLT Sheet." The Hyper CLT Sheet is a civil engineering sheet that utilizes CLT (Cross-Laminated Timber) stacked in an orthogonal direction. It can be used in various locations such as temporary roads, access routes, heavy machinery work yards, and material storage areas. The 5×10 version weighs approximately 230 kg, making it relatively lightweight and easy to install, remove, and relocate. Additionally, it offers environmental benefits such as reducing glare and metallic sounds typical of wood, as well as CO2 fixation. Furthermore, it can be proposed for the use of new technologies in public works as a **registered technology with the Ministry of Land, Infrastructure, Transport and Tourism "TH-250021-A."** Through this press release, we aim to expand the new wooden lightweight sheet that combines wood, NETIS, civil engineering, and CLT to more construction sites.

● The production time for cast prototypes can be shortened! Since model making is not required, the production time for prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly producing sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! Different products, such as similar shapes or varying dimensions, can be molded at the same time in one molding process. This allows for the verification of multiple types in a short period.

The "HA-T Series" is an energy-saving automatic door sensor that opens only for those who wish to enter, whether on a busy street or in a narrow passageway. The automatic door opens simply by bringing your hand close, addressing hygiene concerns even in facilities used by a large number of people. You can choose between "Non-vision Mount Type/HA-T401" and "Non-vision Built-in Type/HA-T520" depending on the application and installation location. 【Recommended for such places!】 ☑ Entrance facing a busy corridor ☑ Presence of counters or signs near the door ☑ Buildings facing narrow passages ☑ Buildings that prioritize aesthetics ☑ Hospitals and facilities that consider hygiene ☑ Large facilities with many doors 【Features】 ● Adaptable to various door types with four detection spot settings ● Reduces unnecessary opening and closing, contributing to energy-saving by minimizing wasteful power consumption ● Equipped with a light touch function, allowing the door to open and close just by waving your hand, ensuring hygiene ● Can also be used as a wide detection range non-vision infrared sensor ◎ For more details, please download the materials or contact us.