Factory icon Manufacturer/ Producer


Kroma Ltd was founded in 1994 as a privately owned business for manufacturing and trading. The focus of our activities has always been on development and production of sealing systems for rotary equipment, such as pumps, compressors and mixers. The technological process of production is completely "in-house". Starting from the design of new products, production and testing as well as control and monitoring of exploitation at end users. Our customers come from various industry sectors such as: Pulp and paper industry Oil and gas industry Power plants and energetic sector Food and beverage industry Water treatment industry Kroma Ltd is an ISO 9001 certified company, and also we possess the ATEX certificate for our products. With constant investments in our employees and their knowledge and skills, as well as utilizing new technologies and materials, we have continuously improved the quality of our products and with that achieving steady growth.

Product catalogue preview


Cartridge mechanical seal single or double type, with our without flush, with our without lip seal. Seals are for application in demanding conditions such as pulp and paper industry, mining industry, various stages in the oil and gas industry, etc.


Cartridge mechanical seals manufactured to meet API 682 (ISO21049) are meant for use in the petroleum, natural gas and chemical industries. During processing of crude oil various chemical compounds are being released, and designers should count on sealing fluids which could be: -under the very high pressure -under very high or very low temperatures -on very high or low pH value -very high or very low viscosity -abrasive -harmful, polluting and potentially explosive API 682 (ISO21049) specifies requirements and gives recommendations for sealing systems with aim to secure that the fluids with characteristics above could be transported: -with minimum waste -with maximum environmental protection -with minimum mechanical failure -with best price-quality ratio


Rotary pressure joint is an assembly which secures sealing between inlet pipe and rotational cylinder thus providing heat transfer by media in or from the equipment's rotational element. Fluids that are commonly used for heat transfer are water, thermal oils, hydraulic oils, cooling fluids and vapor. When it comes to rotary pressure joints, sealing of work fluids is done by the use of mechanical seal. The mechanical seals spring provides contact between sealing faces before the machine starts it's work, while during work, the contact is secured by the act of hydraulic pressure, except in cases of low operating pressures or vacuum. The right choice of mechanical seal is of major importance in order to reach the work of rotary pressure joint efficient , because in cases of mechanical seal malfunction, leakage occurs which reduces efficiency of entire cooling or warming process. “ Kroma Ltd” delivers rotary pressure joints with either single or dual flow.


Carbon graphite, as a material is used to manufacture: -Graphite slide bearings -Carbon vanes -Segment radial sealing rings Characteristics of the material include: -Self-lubricant -Can be used in high temperatures -Chemical composition that ensures usage in chemical and pharmaceutical industry -Good mechanical properties

Company info

Key figures

  • Company headcount
    11 – 50


  • Main activity
    Manufacturer/ Producer

Business info

Trading areas

  • Regional
  • National
  • Check Circle Outline icon European
  • International

Delivery areas

Terms of delivery (incoterms)

  • Purchaser
  • Shared
  • Vendor

Keywords associated with this company

  • Seals, mechanical
  • mechanical cartridge seals for pumps
  • Mechanical seals according to API 682
  • Multi spring mechanical seals
  • Rotary joints
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