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Yongjia Ourseal Security Seals Co.,Ltd  
Metal body coated with plastic

Welcome to Ourseal Co.

we inspect each seal in two times to make sure the quality is 100% good.

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About us

Ourseal(R) Co.,Ltd is a professional manufacturer of security seals and security bags in China.we are NOT the middle trade company,all products are made by ourselves.Therefore,the quality is beening controled by ourselves,so that the price is more competitive.

The factory was certificated by USA and Germany embassy.The security seals are complying with ISO/PAS 17712:2013.The security seals are certified by Dayton T Brown lab. in USA.

The security seals range is :Bolt seals,Cable seals,plastic seals,meter seals,water seals,Oil Seals,padlock seals,arrow seals (zip seals) and so on.

Ourseal was on Cemat exibition in Rusia in 2018

OURSEAL's booth is at A2-430
Fair:transport logistic
Date:4th-7th June, 2019
Address:Fairground Messe München


Security seals are mechanisms used to seal shipping containers in a way that provides tamper evidence and some level of security. Such seals can help to detect theft or contamination, either accidental or deliberate. Security seals are commonly used to secure truck trailers, vessel containers, chemical drums, airline duty-free trolleys and utility meters. Typically they are considered an inexpensive way of providing tamper evidence of intrusion into sensitive spaces.

High Security Seals

A High Security Seal is constructed and manufactured of material such as metal or metal cable with the intent to delay intrusion and have been designed to conform with world customs and ISO security seal standards. The International Standards Organization (ISO) published the new version of ISO 17712 on 15 May 2013. The major changes in the new edition concern Clause 6, Evidence of Tampering. Changes were required due to the demonstrated impracticality of tamper-related tests in ISO 17712:2010 edition.

A measure of a seal's security is whether it has obtained an ISO 17712:2013 rating. US Customs-Trade Partnership Against Terrorism (C-TPAT) and the World Customs Organization’s Framework of standards, endorsed and encouraged the use of ISO compliant seals.

The requirements for certain security level of seals are defined in the ISO 17712. The seals that belong to the High security level and Security level are also called barrier seals. They are made of different metals or metal alloys, meaning that they require special tools to be opened, such as bolt cutters or pliers. Cable seals and bolt seals also fall into this category. Designed to deter opportunistic theft of high value goods, they also can often be branded and numbered to improve tamper resistance and provide excellent security for containers. The seals that are in the Indicative level as to ISO 17712 are made of plastic or thin metal.

Security Seal Manufacturers have worked alongside ISO Security Auditor's to provide the following information to help inform businesses and other interested parties about the new edition.

Bolt Seal

High Security Bolt Seal

Cable Seal

Aluminum cable seal and others
Cable seals allow for more versatile application, as they have variable length of the locking mechanism limited only by the cable length. Typical applications include sealing trucks and railway cars transporting valuable commodities. An internal locking mechanism prevents the cable from being retracted. Most cable seals are classified as security or high security level as to ISO 17712.

All ISO 17712 compliant seals are numbered on both seal body and head, to prevent substitution of either part. This is usually done using laser marking, which cannot be rubbed off.

Ball seals are commonly used for securing trucks. They consist of a metal strip with a punched hole, attached to a housing section. When the strip is bent and threaded through the hole, a ball inside the housing section locks it in place. Most ball type seals belong only to the indicative level as to ISO 17712.
Plastic security seals are manufactured normally in two styles; adjustable or fixed length. Adjustable length seals can fit many applications from securing the neck of a bag or mail sack to sealing chemical drums, first aid kits and fire extinguishers. They have an adjustable length much like a cable seal but offer a much higher security level and an audit trail due to sequential numbering and the ability on some seals to be bar-coded and have a company name and logo printed or laser etched on.

Fixed-length seals tend to be more tamper resistant than variable length as there are no sliding parts, they simply 'click' into place to lock, which can make them easier to fit than variable length seals. Most fixed length seals can also be branded and numbered for extra security. Fixed length is often the choice of single use security seals for transport applications.

Padlock seals are usually supplied as a completely plastic seal, shaped as a standard padlock would be. Technically, they can be classed as a fixed length seal. They feature the same types of tamper-evident protection as variable length and fixed length have available - numbering, bar-coding and branding - but fit some different applications. The most common use for these seals is for airline duty-free trolleys. One reason for this is that plastic padlocks can be placed over a locking part as any metal padlock would be to secure, but do not require keys to open, they simply break off at their built in break point using hands or a small pair of wire cutters. They are secure due to the audit trail available as a result of the sequential numbering.

Meter seals are used with electric or gas or water meters and usually molded in polycarbonate. The transparent body of the seal means that the locking mechanism is visible, and can provide clear indication of tampering. Meter seals can withstand exposure to sunlight and extreme weather, and a wide range of temperatures. Designed for only a single use, they are destroyed when removed. Some meter seals contain components which glow under ultraviolet light, allowing the seal to be easily located in darkness.

Special security tapes and labels have high bond-strength adhesives in combination with backing that are designed to fracture or delaminate under designated conditions to indicate premature attempts at opening. Custom printing, holograms, and security printing often assist in deterring and indicating tampering.

Plastic Seal

All kinds of plastic seals

Meter Seal

Twist meter seal,oil seal,water seals
Twist Meter Seal
steel rod or heavy-gauge wire of various diameters, which is inserted through the locking fixture and twisted around itself by use of a special tool
scored seal
metal strip which is scored perpendicular to the length of the strip
Note 1 to entry: The strip is passed through the locking fixture and bent at the score mark. Removal of the seal requires bending at the score mark, which results in breakage of the seal.
cinch seal
pull-up seal
indicative seal consisting of a thin strip of material, serrated or non-serrated, with a locking mechanism attached to one end
Note 1 to entry: The free end is pulled through a hole in the locking mechanism and drawn up to the necessary tightness. Cinch or pull-up type seals can have multiple lock positions. These seals are generally made of synthetic materials such as nylon or plastic. They can resemble, but are significantly different from, simple electrical ties.
padlock seal
locking body with a bail attached
EXAMPLE Padlock seals include: wire shackle padlock (metal or plastic body), plastic padlock, and keyless padlock seals.
Note 1 to entry: The padlock itself is not an integral part of the freight container.
strap seal
metal or plastic strap secured in a loop by inserting one end into or through a protected (covered) locking mechanism on the other end
Note 1 to entry: The seizing device can be plastic or metal and its deformation is one indication of tampering.

Padlock Seal

Hasp padlock seal

Factory address:

Yongjia Ourseal Security Seals Co.,Ltd
Changyuan industril zone
Wenzhou,P.C 325000
Tel:0086-577-8857 6658
Fax:0086-577-8857 6166


Contact us:

Mr. Sam Ouyang


QQ: 535352717




Bolt Seal
Cable Seals
Plastic Seals
Padlock Seals
Meter Seals
Barrier Seals
Clip Seals
Metal Strap Seals


Standard Compliant



Embassy Certificates


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