Four taboos to pay attention to when wearing pearls in summer

Pearls have a magnificent color and elegant temperament, which symbolizes health, purity, wealth and happiness. It has been loved by people since ancient times. Although it does not have the brilliance of diamonds, there is no dazzling beauty of colorful treasures, but the pearls are warm and delicate, and the natural form is beautiful. It is this natural beauty that becomes the most charming place of pearls. Each pearl has a faintly visible faint pearly surface. This unpredictable mysterious charm and elegant temperament are exactly the same as the feminine femininity, especially the elegant and subtle oriental women. But for the maintenance of pearl jewelry is also sloppy, proper maintenance will make your pearls lasting, bright and moving.

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1. Pearl should not be placed in high temperature and sunlight, which will affect the moisture of the pearl and reduce the luster.

2. Pearls should not be in contact with cosmetics. They should not be placed in a cosmetic box, and should not be placed in a sealed plastic bag. It is best placed in a ventilated place to maintain the brilliance of the pearl.

Platinum jewelry

3. The pearl is especially smoky, the stain is greasy and penetrates into the nacre. It will turn yellow. This is because the main component of the pearl is calcium carbonate. The acidic and alkaline liquid touches the pearl, which makes it dull. .

4. After wearing the pearl ornaments, use a soft toothbrush and wash with a neutral soap brush. Wash the stains on the pearls, then rinse them in clean water, then dry them with a soft dry towel. dry.

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Standard O-Ring Material Applications
    We offer the following six (6) standard rubber materials in a range of durometer (Shore A) hardnesses to satisfy practically any service condition:
    Viton® / FKM: Fluorocarbon (Viton®) exhibits exceptional resistance to chemicals, oils, temperature extremes (-13°F to +446°F), low compression set, low gas permeability and excellent aging characteristics. Applications include: aircraft engines, automotive fuel handling systems, and chemical processing industries. FKM is also suitable for high vacuum applications. It is not recommended for exposure to ketones, alkalis, and Skydrol® fluids. Custom compounds are available with improved chemical and low temperature resistance. 
    Nitrile / NBR: Nitrile (Buna-N) is the most widely used elastomer due to its excellent resistance to petroleum products, operating temperature range (-40°F to +257°F) and one of the best performance-to-cost values. It's an ideal material for aerospace, automotive, propane and natural gas applications. Special Hydrogenated Nitrile (HNBR) compounds can improve resistance to direct ozone, sunlight, and weather exposure while increasing temperature range to +300°F.
    Ethylene-Propylene / EPDM: EPDM has outstanding resistance to heat, water and steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight (-40ºF to +275ºF); but it is not recommended for gasoline, petroleum oil and grease, and hydrocarbon environments. This popular rubber compound is usually the first choice for low torque drive belt applications.
    Fluorosilicone / FVMQ: Fluorosilicone (-75º to +400ºF) combines the good high and low temperature stability of silicones with the fuel, oil, and solvent resistance of fluorocarbons. FVMQ is unparalleled for aerospace fuel systems, auto fuel emission control systems and to meet or exceed government, military, aerospace, automotive, industrial and commercial specifications. However, due to relatively low tear strength, high friction and limited abrasion resistance of these materials, they are generally not used in dynamic applications. They are also not recommended for exposure to brake fluids, hydrazine, or ketones. 
    Silicone / VMQ: In the Silicone family, you will find compounds which are superior as static seals in extreme temperature conditions. Standard compounds handle operating temperatures -85º to +400ºF. Silicone compounds are popular in food and medical applications because they are very clean and do not impart odor or taste. Special Phenyl silicones can be used down to -148°F. Read More
    Neoprene® / CR: Neoprene (-40º to +250ºF) is reasonably priced and features good resistance to petroleum oils, ozone, sunlight and oxygen aging, relatively low compression set, good resilience and outstanding physical toughness. It is the preferred sealing material for the refrigeration industry because of its resistance to ammonia and Freon®. Read More
    Let us know if you require materials to meet the following standards; UL, MIL, AMS, ASTM, FDA 21 CFR 177.2600, USP Class VI, or ISO 10993. We have many special compounds that can meet the specification you are looking for.

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