OR Tambo International Airport (IATA: JNB, ICAO: FAJS) (ORTIA) is a major airport in Kempton Park, Ekurhuleni, Gauteng, South Africa, near the city of Johannesburg. It serves as the primary airport for domestic and international travel to/from South Africa and is Africa's busiest airport with a capacity to handle up to 28 million passengers annually. The airport is the hub of South Africa's largest international and domestic carrier, South African Airways (SAA), and a number of smaller local airlines.

It was formerly officially known as Johannesburg International Airport and before that as Jan Smuts International Airport (hence the airport's ICAO code, FAJS) after one of South Africa's internationally renowned statesman by that name. The first renaming was done in 1994 when the newly reformed South African government implemented a national policy of not naming airports after politicians. The policy was however reversed later, and the airport renamed again on 27 October 2006 after Oliver Tambo, a former President of the African National Congress.

An international airport is an airport that can accommodate international flights. They are typically equipped with customs and immigration facilities. Such airports are usually larger, and often feature longer runways and facilities to accommodate the large aircraft commonly used for international or intercontinental travel. International airports often also host domestic flights (flights which occur within the country), to serve travellers to and from these regions of the country.

In many smaller countries most airports are international airports, so the concept of an "international airport" has little meaning. In certain countries however, there is a sub-category of limited international airports which handle international flights, but are limited to short-haul destinations (often due to geographical factors) or are mixed civilian/military airports.^{[citation needed]}

Many airports with regularly scheduled international service have the word "International" in their official names, but others, including such major airports as London Heathrow Airport, Paris-Charles de Gaulle Airport, Frankfurt Airport, Detroit Metropolitan Wayne County Airport and George Bush Intercontinental Airport do not. Conversely, some airports which call themselves international airports, especially in smaller United States cities, in fact have no scheduled international airline passenger service but do have customs and immigration facilities serving charter, cargo and general aviation flights. At many of these airports customs and immigration services are only available with several hours advance notice. One example of such an airport is Gerald R. Ford International Airport in Grand Rapids, Michigan. A few, such as Gary/Chicago International Airport in Gary, Indiana, are in fact not international airports at all; they are not designated as airports of entry but aspire to become such in the future and added "international airport" to their names as a marketing tool.^{[citation needed]}

An O-ring, also known as a packing, or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a disc-shaped cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.

The O-ring may be used in static applications or in dynamic applications where there is relative motion between the parts and the O-ring. Dynamic examples include rotating pump shafts and hydraulic cylinder pistons.

O-rings are one of the most common seals used in machine design because they are inexpensive, easy to make, reliable, and have simple mounting requirements. They can seal tens of megapascals (thousands of psi) of pressure.

The US patent for the O-ring was filed in 1937 by a then 72-year-old Danish-born machinist, Niels Christensen. He came to the USA in 1891 and soon after that patented an air brake system for streetcars (trams). Despite his legal efforts, his intellectual property rights were passed from company to company until they ended up at Westinghouse. During World War II, the US government commandeered the O-ring patent as a critical war-related item and gave the right to manufacture to other organizations. Christensen received a lump sum payment of US$75,000 for his efforts. Litigation resulted in a $100,000 payment to his heirs in 1971, 19 years after his death.

Jamie Szantyr (born June 2, 1981) is an American professional wrestler currently working for Total Nonstop Action Wrestling under the ring name Velvet Sky. She is a former TNA Women's Knockout Champion and TNA Knockouts Tag Team Champion with her former Beautiful People partners Madison Rayne and Lacey Von Erich. While as a team the three defended the title under the Freebird rule and hold the longest reign for the championship. She also works outside of TNA as Talia Madison and Miss Talia.

Prior to debuting, Szantyr was trained by Jason Knight and Kevin Landry at the House of Pain Pro Wrestling Dojo. After completing her training, she began working as a valet and wrestler on the independent circuit using the ring names Miss Talia, Talia Doll, and Talia Madison. On the independent circuit, she formed a tag team known as T&A with April Hunter. She was booked to her first wrestling championship during her time in World Xtreme Wrestling, getting the WXW Women's Championship after winning a battle royal on May 29, 2004.