o-ring保質期

O形圈保質期合規性標準

欧宝网页登陆全球O形圈和密封貼在SAE國際航空航天標準AS5316for all elastomer product shelf life and storage conditions. Previously known as ARP5316 (Recommended Practice), this standard is based upon both cumulative studies and industry input regarding practical storage limits and FIFO requirements. Please note compliance to this standard is voluntary – Global O-Ring and Seal meets all customer requirements set forth. These limits are based on examination and testing of rubber seals with extensive shelf age, in some cases more than 30 years. In addition to practical experience, these recommendations also conform to theoretical expectations: those materials with unlimited shelf lives show no chemical potential for degradation due to atmospheric exposure and are chemically and physically stable.

O-Ring Shelf Mide Per AS5316建議

The chart below provides the recommended shelf life for various materials of elastomer (rubber) seals, per SAE’s Aerospace Recommended Practice ARP 5316. Global O-Ring and Seal has accepted ARP 5316 as the most comprehensive basis for establishing shelf life, however, it is not a binding Specification. This information is to be used simply as a basis upon which companies can form their own shelf life requirements.

*注意隻有5316次交易storageof elastomeric parts and carries no justification for components post application/assembly

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儲藏條件：

適當的儲存條件是樞轉，以確保滿足上述材料的保質期標準。下麵列出的各種因素可以影響保質期，然後是AS5316要求。

溫度：Storage temperature must be between 59°F (15°C) and 100°F (38°C).

Humidity:- 除非儲存在密封的防潮袋中，否則相對濕度（RH）必須小於75％。

Light:必須保護材料免受陽光直射和/或具有U.V的強烈人造光。內容。

輻射：All precautions must be taken to block sources of ionizing radiation likely to cause damage.

臭氧：儲藏室應沒有任何可能產生臭氧（汞蒸汽燈或高壓電氣設備）或可燃氣體/蒸汽的設備。

Deformation:材料應儲存在無應變條件下，避免壓力和其他變形原因。

不同的材料：避免接觸其他材料，例如液體或半固體（汽油，油脂，酸，消毒劑，清潔液），金屬（銅，錳，鐵）和其他彈性體。

Packaging Requirements:

ARP 5316 recommends individual packaging of rubber seals to protect them and maintain batch traceability. We have found that our bulk packaging accomplishes the same. In addition, the data utilized by the SAE committee was based on the examination of 32-year-old seals. No differences were found between bulk packaged and unit packed seals in this study. Therefore, we feel that unit packaging is not critical for attaining the stated shelf lives; however, it will be available at customer request.

治愈日期：

ARP 5316沒有提到治愈的四分之一，而是指“製造時間”。在全球O形圈，我們利用了本季度固化的最後一天作為製造時。

曆史：

Age control of elastomeric seals and assemblies started after World War II on hydraulic, fuel and lubrication seals on aircrafts. The first document on age control was released in 1958 and was a compilation of several studies on age control done since WWII. After several more studies and papers, MIL-STD 1523 was released in 1973 and gave 12 quarters as maximum shelf life. This was extended to 40 quarters in 1984 with the release of MIL-STD-1523A. This standard was cancelled in 1995 when the release of AS1933 was issued. AS1933, “Age Controls for Hose Containing Age-Sensitive Elastomeric Materials” only addressed elastomeric hoses and seals were essentially released from control.

In the past, MIL-HDBK-695C, MIL-STD-1523A, and its replacement, AS1933, were applied to rubber seals. MIL-STD-1523A was cancelled in 1995; the cancellation notice referred to AS1933 as a potential replacement. However, AS1933 specifically deals with rubber hose, and does not deal directly with the concerns of the seal industry. In like manner, MIL-HDBK-695C applies to any and all rubber goods — but does not satisfy the needs of the seal industry. ARP 5316 was written to “fill the void” and provide a foundation upon which seal manufacturers, distributors, and users could generate realistic shelf life criteria.

概括：

Because ARP 5316 represents the latest and most accurate information concerning shelf life of elastomer seals, Global O-Ring and Seal recommends that all distributors and customers work to incorporate the new guidelines in the most appropriate manner. ARP 5316 is a copyrighted document. Copies of ARP 5316 may be purchased from SAE by calling (724) 776-4970 or athttp://standards.sae.org/arp5316c/。

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